PROCEEDINGS OF THE

NUCLEAR PHYSICS AND SOLID STATE PHYSICS SYMPOSIUM

MADRAS, DECEMBER 26-30, 1979

VOLUME 22 C

SOLID STATE PHYSICS

ORGANISED BY THE

DEPARTMENT OF ATOMIC ENERGY

GOVERNMENT OF INDIA

CONTENTS

Page

L LOW TEMPERATURE PHYSICS AND QUANTUM FLUIDS

"1. In-SITU Formed Composites of V3Si in

Cu-Rich Alloys : R. G. Sharma,

M. M. Krishna and A. V. Narlikar.

"2. Two Typical Josephsoa Effect Behaviour

in Clarke Solder Drop Junctions : V. S. Tomar,

A. K. Gupta, N. D. Kataria and Madhu Prasad. 4

"3. Effect of JS -Phase Decomposition on the Super¬

conducting Properties of Ti-27 at. % Nb Solid

Solution : Y. Hariharan, M. C. Valsakumar and

T. S. Radhakrishnan. 7

"4. Computation of Minimum Volume Sixth-Order

Superconducting Solenoids : M. P. Janawadkar,

M. C. Valsakumar and T. S. Radhakrishnan. 10

"5. Structure and Superconductivity of Pb,_xAxMo/Sg(A = Vacancy, Ag, Bi, In) Chevrel Phase

Compounds : A, M. Umarji, G. V. Subba Rao,

M. P. Janawadkar and T. S. Radhakrishnan. 13

"6, Synthesis, Electrical and Superconducting

Chevrel Phases Containing Oxygen :

A. M. TTmarji,. G. V. Subba Rao,

V. Sankaranarayanan, G. Rangarajan and

R. Srinivasan.16

"7. Low Temperature TCR of Thin Metallic

Wires : Neeraj Jain, Shyama Raju and

Ramji Srivastava. 19

"8. An Explanation of the Second Branch

Excitations Observed in Superfluid He :

M. Bhuyan and D. N. Tripathy. 22

"9. On the Structure Factor of a Quantum Fluid-

A New Look : R. Sridhar and R. Vasudevan. 25

"10. Dynamics of Fermi Liquids s K.N. Pathak

and V. K. Jindal.29

li-

Theory of Dispersion and Damping of

Plasmons in Electron Liquid : M. R. Mongaand K. N. Pathak.

ELECTRONIC PROPERTIES OF SOLIDS

Positron Life-Time Studies on ThO

Powders : D. D. Upadhyaya,R. V. Muralidharan, B. D. Sharma,

K. G. Prasad and R. Mohan.

Positron Lifetimes in the Magnetic

System Fe, .Ti 04 : M. B. Kurup.

Positron Anihilatton in Mono-CrystallineGermanium : Paul C. Baynes,S. Ramasamy, M. Dakshinamoorthy,K. Iyakutti and T. Nagarajan.

The Study of Electron Momentum Densityin CD -Zr BY Positron Annihilation AngularCorrelation Technique : Surinder M. Sharma,

S. K. Sikka and R. Chidambaram.

Effect of Charge Density Waves on the

Positron Effective Mass and DMR in Alkali

Metals ; Surinder M. Sharma.

Electronic Thermal Gruneisen Parameter

in Shock Equation of State Studies :

B. K. Godwal and S. K. Sikka.

Equation of State for the Intermediate RegionB. K. Godwal (Presented by &K. Sikka)

d-Electron Momentum Densities for Positron

Annihilation in Transition Metals (Y to Ag) :

M. Dakshinamoorthy and K. Iyakutti.

An Improved Treatment of the Two Band s-d

Model with Hybridisation : P. B. Maiti and

R. K. Moitra.

Stark Ladders via Evolution Operator :

P. K. Mahapatra and C. L. Roy.

"11. Atoms with Core Holes in the StatisticalModel : Rajeev K. Pathak, D. G. Kanhereand P. V. Panat. 66

"12. Performance of a 241Am Spectrometer for

Comptoa Profile Studies : D. P. Mahapatraand H. C. Padhi. 70

"13. A. Versatile System for Study of the Band-

Spectra in Soft and Hard X-ray Regions :

S. G. Saxena, Satish Chandra, D. Jain,

K. B. Garg and B. K. Sharma. 73

+14. Relativisitic Energy Bands of Zinc by the

RKKRZ Method : Jonaki Chowdhurl. 76

+15. Energy Band of Osmium : M, G. Ramchandani. 79

+ 16. Metal-Semiinetal Transition in Sr : R. Asokamani

and K. Iyakutti. 82

+17. Superconducting Transition Temperatures of

Zr, Os and Th-Band Structure Results :

K. Iyakutti and R. Asokamani. 85

+ 18. The Electronic and Optical Properties of

Substitutional SiGe Alloys : M. Nandi,

R. L. Sarkar and S. Chatterjee, 89

+ 19. Electronic and Magnetic Properties of

Amorphous Mg 7oZn_ 30 Alloy :

M. Sen and S.' Chatterjee. 92

(Papers 14-19 were rapporteured byDr. Y. K. Vohra)

*20. Dielectric Function of Electron Liquid

including Higher Order Exchange and

Correlation Effects : R. K. Pal,

D.N. Tripathy and S. S. Mandai. 95

*21. Positron Annihilation Lineshape Studies

on Neutron-Irradiated Molybdenum :

N. Panigrahi and P. Sen. 96

*22. Study of Colloidal Centres in NaCl by Positron

Annihilation : S. Rarrasamy and

T. Nagarajan. 97

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*23. X-ray Photoelectron Spectroscopic Study

of Surface Oxidation of Fe, Ni and Cu ;

A. Srinivasan, K. Jagannathan,

M. S. Hegde and C. N. R. Rao. 98

*24. Study of Many Body Effects on the Diamagnetism

of an Electron Gas at Metallic Densities :

S. K. Choudhury and S. P. Mohanty.

"25. X-ray Spectroscopic Study of a Cu-Ni

System : B..C. Mazumdar, D. Jain,

B. K. Sharma and K. B. Garg.

"26. X-ray Absorption Study of Density of

States in Cobalt and Nickel, Metals and

Complexes ; D. Jain, B. K. Sharma,K. B. Garg and A. Kothiwal.

"27. X-ray Absorption Study of Se-Ni-Fe Alloy

D, Jain, Y, Sharma, K. B. Garg and

B, K. Sharma,

"28. X-ray Spectroscopic Study of RECu2Si2Intermetallic s : T, K. Hatwar, B. D. Padalia,M. N. Ghatikar, E. V. Sampatkumaran,L. C, Gupta and R. Vijayaraghavan. 109

"29. Study of Cobalt Ion in PolycrystalUne Form

and Aqueous Solutions :' P.N. Koul,"N

.

M. N. Ghatikar and B. D. Padalia. 1 13

"30. XPS Studies of Rare Earth-Mn2 Intermetallic

Compounds : B. D. Padalia, V. Prabhawalkar,P. D. Prabhawalkar, A. Manohar, S. K. Malik,

S, K. Dhar and R. Vijayaraghavan. 117

"31. UPS and. XPS Studies of Pure and DeliberatelyOxidised Silver : B. D. Padalia,

P. D. Prabhawalkar, B. N. Bhattacharya,S.K. Mallik and V. Prabhawalkar. 120

"32. "XPES StudieB of Oxides of Second-and-

Third Row Transition Metals includingRare Earths : D. D. Sharma and C. N. R. Rao 123

•99

100

103

106

Page

"33. Auger and X-ray Fhotoelectron. SpectroscopicStudy of Cobalt Oxides and Oxidation of Co :

M. S. Hegde, A. Srinivasan, K. Jagannathanand G. C. Chaturvadi. 127

"34. Adsorption of CO oa NI by Photoelectron and

Auger Spectroscopy : K. Jagannathan,A. Srinivasan and M. S. Hegde. 131

"35. Photoabsorption Study of Rhodium Metal and

Complexes : Satish Chandra, B, K. Sharma,K, B. Garg and A. K. P.. Stnha. 135

"36. Quasi Stationary p-Electron States in

Germanium and the Origin of K-Emission

Satellites t. B. D. Shrivastava and P. R. Landge. 139

"37. 'White Lines' in L-Absorption Spectra :

S. N. Gupta, A.N. Gandhi and Saroj Gupta. 142

"38. High Frequency Satellites as Quasi StationaryStates and the EXAFS of Lanthanides :

S. N. Gupta, A. N. Gandhi and Saroj Gupta. 144

39. Dielectric Function of a Model Semiconductor :

Prabha Sharma and S. Auiuck. 145

40. Stimulated Raman Scattering and Para¬

metric Conversion in Semiconductor-

Plasmas : S. Gupta and N. Apte. 148

41. Concentration Dependent Dielectric Constant

in N-Type Semiconductors : E. Palanivandi. 152

42. Concentration-Dependent Valley Orbit Splitting in

N-Type Silicon : P. L. Geetha and

S, Baiasubramanian. 155

43. On the Origin of 0.85 eV Electron Trap in GaAs :

S. Subramanlan. B. M. Arora and S. Guha. 158

44. Theory of Electric Susceptibility of Tetrahedral

Semiconductors : T. Sahu, N, Panigrahi and

P.K. Mishra. 161

*45. Amplification of Acoustic Waves in a Plezo-

.

electric Semiconductors by the Application of

Electron Density Gradient ; S.K. Sharma and

P. Palanichamy. 162

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46. Effect of Free-Carrier Doping on Some

Properties of Ionic Semiconductors :

R.K. Singh. G. N. Agrawal and K. P. Singh. 164

47. Decay and Modulational Instabilities in

Semiconductor-Plasmas : S. Guha and

PT Namioshi. 167

48. Effect of Temperature and Mobile Space-

Charge on the Properties of DDR Silicon

IMPATTS : M. Sridharan and S.K. Roy. 170

49. Multivalley Model and the Donor Spectra in

Cadmium Fluoride : M. A. Samy and

K. Nava&eethakriahnan. 173

50. The Effect of Asymmetry of the P and Ga

Sites on the Donor Energies in GaF :

M. Robert Singh and S. Balasubramanian. 177

51. Tunneling in Junctions : P. N, Roy. P.N.Singh,S. K. Ghosh and D. K. Roy. 181

52. The Dielectric Function in Maxwell's Equation:

P. Li. Geetha D. Chandramohan and

S. Balasubramanian. 186

*53. The Fermi Level in Heavily Doped Semi¬

conductors : D.K. Roy and R, Y. Thakur. 189

*54. Diffusivity-Mobility Ratio in Degearately

Doped Semiconductors : R. Y. Thakur and

S. Dayal. 190

55. A Theoretical Model for the Photocapacitanceof MOS Structures under Low Light Intensities :

M. Mohan Chandra and G. Suryan. 191

56. Electric Field Dependence of Thermal Emission

and Capture Rates of Deep Impurities in p-n

Junctions : V. Kalvanaraman and Vikram Kumar. 195

57. Electrical Properties o£ Silicon Nitride LayersFormed by Nitrogen Ion Implantation into Silicon '•

A. D. Yadav and M. L. Joshi (Presented byD. C. Kothare), 199

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*58, Orientation Dependence of Interface States

of n-GaAs - Native Oxide MOS Structures :

A, M. Narsale and B. M. Arora. 202

*59. Effect of Mechanical Strain on Photoconductivity

and Effect of Photo-Illumination on Piezoresistance

of Silicon : Mohaa Lai and R. Par shad. 204

*60. Effect of Magnetic Field on Photoconductivity

and of Photo-Illumination on Magnetoresistance

of P-Type Silicon : Mohan Lai and R. Parshad. 205

+61. Dielectric Properties of Electron Beam

Evaporated Indium Oxide Thin Films :

A. Balasubramanian, M. Radhakrishnan

and C. Balasubramanian. 206

+62. Persistent Internal Polarization in a Si:H

and a-Ge:Li Thin Films : D. S. Misra,

P.N. Dixit and S. C. Agarwal. 210

+63. Capacitance-Temperature Characteristics of

MIM System : G. S. Nadkarni and V. S. Shirodkar. 213

(Papers 61-63 were rapporteured by Dr. B, M. Arora)

64. TRAP Assisted Tunneling in PVF2 Films :

P. C. Mehendru, Suresh Chand and

S. Radhakrishnan. 216

65. Electrical and Galvanomagnetic Properties

of Tellurim Films : B. Chakraborti and

A.K. Pal.219

*66. Characterization of Amorphous Indium-

Tellurium Alloy Produced by Roller

Quenching : S. T. Ladshmikumar,

A. M. Jayannavar, R. N. Mallya and

E. S. R. Gopal.223

*67. Study of Conduction Phenomena in Bismuth

Oxide Layers : V. K. Saxena, S. Singh,

S. L. Pandey, T. N. Agarwal and

R. N. Saxena.2Zi

71. Electrical Properties of MOj W Se Single

Crystals s M.K. Agarwal anaF.A. wani.

Pa

-vili-

*68. Effect of Implantation of 14Nt Ions on

Amorphous and Crystalline Thin Films

of InTe : D. V. Krishna Sastry and

P. Jayaraman Reddy. 225

*69. Electrical Conductivity of Zinc Phosphide

Thin Films s K. R. Murali and D. R. Rao. 227

*70. ' Surface Charge Decay in Corona ChargedPolyethylene Films,: P. C. Mehendru,

M.N. Kamalasanan and S. Radhakrishnan. 228

229

*72. Deaquation Process In Na,WQ4. 2H20 ThroughBielectrical Dlelectrical Measurements :

Rama Singh and S. D. Pandey. 231

73. Variation of Resistivity with Applied Field

and Temperature of BaTlOj Single Crystals :

K. R. Bagree, D. A. Deshpande and V. G.Kher. 232

74. Electrical Properties of GEL Grown KDP Single

Crystal : F. D. Gnanam, M. Shanmugham,

P. Ramasamy and G. S, Laddha. 234

*75. Effect of Surface Layers on the Spontaneous

Polarization of Some Ferroelectrica :

A, Bhanumathi and K. Sambasiva Rao. 235

76. Effect of Pressure an the Thermal Emission

Rate of Gold Acceptor Level in Silicon

p+n Junctions Using Deep Level Transient

Technique : K. V. Ramana Rao and

V. Kalyanaraman. 236

*77. Electron-Electron Scattering and the Low

Temperature Electrical Resistivity of Alkali

Metals : O.N. Awasthl and S. Sathlsh. 240

*78. Dielectric Behaviour of Doped and Undoped

. Polystyrene in Cylindrical Configuration :

H. C. Sinha and A. F. Srivastava. 242

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*79. Polarisation Reversal in Dicalcium Strontium

Propionate Single Crystal s Ramnatb Ravi,

K. S. Sangunai and P. S. Narayanan. 243

80. Electrical Conductivity of Phenoxaaine-Iodine,

Phenothiazime-Iodine and Oligo-Aniline-Iodine

Complexes : A.K. T. Oza„ 244

81. Electrical Resistivity Study of the Organic

Charge Transfer Complex TetramethylBenzidine - TCNQ at Pressures upto

80 Kllobar and Temperatures down to 77°K :

A. K. Bandyopadhvav, S. Chatterjee and

S. V. Subrarnanyam. 248

82. Electrical Switching of the Organic ChargeTransfer Complex Tetramethyl Benzidine —

TCNQ and Pressure Effect on it ;

A. K. Bandvopadhvav, S. Chatterjee and

S. V, Subrarnanyam, 251

*83. Space Charge Limited Conduction and

Thermally Stimulated Current in Naphthalene :

Ranjit Singh, S. C. Datt, J. M. Keller and

R. G. Kekre.254

*84, Short-Circuit Isothermal Depolarization

Currents in Polypropylene : P. C. Kekre,

J. M. Keller, Ranjit Singh and S. C. Datt. 255

*85. Electrical Conduction in the Copolymers of

Iron and Nickel Methacrylates in Methacrylic

Acid : P. R. Sarma, K. C. Tripathi, H. M. Gupta,

Ved Prakash and A.K, Sharma. 256

86. Search for a New Organic Photovoltallc

Material : P. K. C. PiUai, Sr C. Mathur

A. D. Sharma, J. P. S. Chauhan and

Kiran Jain.257

87. Charge Transport in Oxides of Fhenazine

and Dlanthraquinone s & C. Mathur and

B. Kumar.260

*88. Anomalous Electrical Property of Metal-

Free and Copper Fhetcalocyanine Thin Films s

G. Du Sao and H. V, Tiwary.263

gage.

*89. Surface Charge and TSD Studies of PVC Thermo-

electrets : L M. Talwar and R. Sharma. 264

90. Electrical Properties of Poly (Phenylene

Sulphide) : F. S. Vlswanathan, U. S. Tewari,

Saudagar Mai and Fadma Vasudevan. 265

91. Effects of Substltuents on Photoconductivity of

Benzanthroae Thin Films : M. R. Padhye,T. S. Varadarajan and L. N. Chaturvedi. 268

92. Spontaneous Current Emission from PolyvinylAlcohol : R. Sharma, L, V. Sud and L M. Talwar. 271

*93. TSD Studies of Doped and Undoped Polytyrenein Cylindrical Configuration : H. C. Sinha and

A. P. Srivastava. 272

"94. Dielectric Behaviour and Phase Transitions in

Ferchlorates of K, Rb and Vc Cs s

T. Shripathy, H. L. Bhat and P. S. Narayanan. 273

"95. Dielectric Behaviour of Some Metalic Oxides :

O. S. Josyulu, J. Sobhanadri, B. Vlswanathan

and N. K. Appanraj. 276

"96. Dielectric Studies of IsocyanateTerminated

Polymer : J. Cowri Krishna, O. S. Josyuluand J, Sobhanadri. 279

"97. Effect of Ionic Impurity on the Dielectric

Relaxation in Polyvinyl Butyral Thin Films :

P. C. Mehendru, K. Jain and Naresh Kumar. 282

"98. Comparative Study of Dielectric Relaxations in

VC-VAc Copolymer Thin Films having Different

VAc Concentrations : P. C. Mehendru, K. Jain and

N. P. Gupta. 285

"99. Molecular Motion and Dielectric Behaviour of

Bromoform in Solid Phase : A. K. Sharma,V. K. Agarwal and A. Mansingh. 288

"100, Resistivity Studies of Quench Condensed Bismuth

Films at Low Temperatures : V.S. Tomar,M. M. Krishna and R. G. Sharma. 291

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"lOL Electrical Conductivity of Nitrogen Doped

Ti203 Single Crystals i H. V. Keer.

"102. Electrical Properties of CoS04.7H20Crystals Grown at 12. 5 C : P. N, Nandi,

G. B. Wankar, D.A. Deshpande and V. G.Kher.

"103. Electrical Properties of Ln2Mo20_ Pyro-chlores (Ln = Sm - Yb, Y) :

M, A. Subramanian, G. Aravamudan and

G. V. Subba Rao.

"104. Thermally aimulated Depolarisatioa (TSD)Currents in Lithium Potassium Sulphate at

High Temperatures : C. Ramasastry and

K, Subba Ramaiah.

IIL OPTICAL PROPERTIES OF SOLIDS

1. Study of Transition Metal OXY-Anions in

Some Single Crystals : B. V. R. Chowdari

and Yf Ravi Sekhar.

2. Thermoluminescence of Cesium Halides

Doped with Heavy Metal Inns : B. V. R. Chowdari

and S. Selvasekarapandjan.

2+3. Spectroscopic Studies on Ni Ions Doped In

Some Lattices : B. V. R, Chowdari and

C. Murali Krishna.

4. X-Irradiated Luminescence and Point Defects

in Dy Doped CaSO^ and SrSO^ Phosphors :

M. R. Mulla. Rekharani S. Dharawadkar,

S. H. Pawar and J.K. Zope.

5. Temperature Dependent Luminescence and

X-ray Fluorescence Analysis in CaS Phosphors :

G. L. Marwaha, Nafa Singh. Chander Bhan,

S. B. Singh and V.K, Mathur.

*6. Magnetic Behaviour of SrSO i Dy Phosphors :

S. H. Pawar, Rekharani, S. Dharwadkar,

C. D. Lokhande and M. R, Mulla.

/. Thermoluxnincescen.ee of Zj Centres in

KCl:Sr : V. S, Kamvisdar, S. C. Moholkar

and B, T. Deshmukh,

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Page

Reflectance Spectra and Thermoluminescence

of KCl : KBr : D. G. Wakde, S. C. Mohalkar.

S. V. Mohril and B. T. Deshmukh. 327

Decay and Thermoluminescence of Sr&Mn:Ce

Phosphor '. P. R. Lalitha, V. R. Rao and

V.P.N. Nampoori. 331

Optical Spectroscopy Studies on Pr3+ and

Eu3+ in YP04 i R. C. Naik. N. P.Karanjikar,

K. H. Ayyar and N. A, Narasimham. 335

Some Electroluminescent Properties of Rare

Earth Doped ZnO Phosphors : S. Bhushan,Balakrishna Rao Kaza and A. N. Fandy. 338

Undoped and Rare Earth Doped ZnO Electro-

luminors Prepared by a New Technique :

S. Bhushan and R. P. Asare. 341

On the Role of Eu2+ in the Luminescence of

RbBr : S. B. S. Sastry, S. Madhu and S. Saparu. 344

Optical and Thermoluminescence Studies on

Rubidium Bromide Doped with Calcium :

S. B. a Sastry and a Sapru. 345

Dielectric and Optical Properties of Poly-

acrylonitrile : M. Ramakrishna Murthv and

Y. Ranga Reddy. 346

Optical Properties of YIG and its Aluminium

Substituted Polycrystals : C. E. Sooriamoorthi

and St J. Avyappan. 349

Simplified Model for Optical Conductivity of

Copper s A.K, Ahuia, S, Auluck and S.K. Joshi, 352

Excitonic Reflectance Spectra of CdS :

G. Mukhopadhvav. 356

Stimulated Brillouln Scattering (SBS) In Piezo¬

electric Semiconductors s P. K. Sen. 359

Nano-Second Time Resolved Spectroscopy UsingPulsed Nitrogen Laser : H. S. Bhatti,

Unnlkrishnan Nair and R. D. Singh. 362

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Raman Study of LiKSO, i M. L. BansaL

S.K. Deb, A P. Roy and V. C. Sahnl. 365

Fourier Far IR and Infrared AbsorptionSpectra of Double Sulphates HNH,S04,KLiS04 and KNaS04 : S. Alam and

J. P. Srivastava, 369

Role of Water Llgand on the Splittings and

Shifts of Internal Modes of SO|"in MS04tH20(M = Mn, Co, Ni, Zn) : V. P. Tayal,D. F. Khandelwal and H. D. Blst. 372

Laser Raman Spectra of Crystalline

Sulphamlc Acid : A Sundara Raj,

P. Muthusubramanian and N. Krishna Murthy. 373

Nitrogen Laser Excited Fluorescence of

Matrix Isolated Oxalyl Chloride and Chlorine at

77°K : S.L.N.G. Kriahnamachari and

S. M. Jayawant. 376

The Infrared Study of Crystallo-Hydrates of

Nickel : Shashi F.Gupta and B.N. Khanna. 380

The Infrared Spectra of Citrates of Sodium and

Potassium : Shashi F. Gufta, .'P. N. Asthana and

B.N. Khanna.'

384

DYNAMICAL AND THERMAL PROPERTIES OF

SOUPS AND LIQUIDS

Study of Molecular Motions In Liquids from

Electron Spin Relaxation Measurements :

Semiquinones in DMSO and DMSO-Ethanol

Mixtures : G. Krishnamoorthy and

B. a Prabhananda. 385

Vibrational Spectra and Relaxation of MethylIodide in Solutions : V. B. Kartha and

S.B. Kartha. 389

Raman Study of Orientations! Disorder of

Sulphate Ions In Potash Alum : A K. Sood,

Af K. Arora, Gr Venkataraman and

R. Krlshnaswamy.393

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4. Hypersonic Velocity Measurements In

Normal Alcohols : P. S. Parvathanathan

and K. Usha Denlz. 397

5, Velocity Auto Correlation Function in

Classical Liquids : G, S. Dubey, V. K. Jindal

and K. N. Pathak. 401

ti. Effect of Many Body Interaction on the Lattice

Contribution to the Dielectric Polarization in

Non-Centrosymmetric Ionic Solids t S. S. Bedi

and M. P. Verma. 405

7. Core Polarization Effect In the Lattice

Dynamics of Noble Metals : J. C. Upadhyaya, 409

8. On Interionic Potentials and Crystal Properties

of Partially Covalent Solids : R. Kf Singh and

P. Khare. 412

9. Lattice Dynamics of CaWO. : K. Kesavasamv

and N. Krishnamurthy. 416

10. Displaced Shell Model for MgF :

N. Krishnamurthy and K. R. Balasubramanian. 419

*11. Lattice Dynamics of MgO : S. K. Agarwal and

M. P. Verma, 422

*12. An ETSM Lattice Dynamics of SuperconductingTransition-Metal Carbides : H.N. Gupta and

Som Prakash. 423

*13. Long Wavelength Vibrations in Semi-Conducting

Compounds with the Zinc Blende Structure :

A. K. Jain and M. P. Verma. 424

*14. ETSM Analysis of Fhonons in Magnetic Wustite :

H.N. Gupta and Kanti Chandra. 425

*15. Phonon Spectra of Wustite in the ParamagneticPhase : A. N.. Pandey and K. S. Upadhyaya 427

*16. Volume-Force Phonon Dispersion of YS :

H. N. Gupta and R. S. Upadhyaya. 428

*17. Investigation of the Additivity Rule for the

Repulsive Stiffness in Ionic Crystals :

J. Shankar, D. P. Agarwal and S. S. Bedi. 429

*18. Mean-Square Atomic Displacements in Rare

Gas Solids : A. P. G. Kutty and S. N. Vaidya. 431

*19. Thermal Expansion Coefficient of Solids -

An Interatomic Potential Approach :

S. P. Srivastava. 432

*20. Energy of Vacancy Formation in Some HCP

Metals : P. D. Fathak and R. J. Desai. 433

*21. Effect of Anharmoniclty on the Anderson

Gruneisen Parameter of Solids : S. P. Srivastava. 434

*22. Effect of f-Factor on the Line Shape in Micro-

crystals : Mashhood Ali and K. Rama Reddy. 435

*23. Ultrasonic Attenuation in Pottasium at Low

Temperatures,: O.N. Awasthi and S. Sathish. 439

24. Sollton Modes : Application to Some PhysicalPhenomena : P. C. Dash and K. Patnaik. 442

25. Psuedo-Green's Function in Metals with

Impurities : Joglader Singh, S. D. Raj and

S. Frakash. 445

26. Study of Thermophysical Behaviour of Alkali

Hydride Crystals : R. K. Singh and & Tewari. 448

27. Gap Modes in Potassium Iodide, Potassium

Bromide and Sodium Iodide : R. Sebastian,

G. A. Savariraj and T. M. Haridasan. 451

*28. Local Mode Frequencies due to Substitutional

Impurities in Zinc Blende Type Crystals :

R. Sebastian and G. A. Savariraj. 454

*29. Thermal Ionization Energy of F-Centssrs in

Alkali Halides : M, L. Dalai, S. Sivaraman

and Y. V. G. S. Murti. 455

30. Phonon Conductivity of Solids s T. J. Singh

and G. S. Verma (Presented by & Singh). 456

-xvi-

Page

Hole-Phonon Scattering In High Magnetic

Fields : Surendra Singh and G. S. Verma. 462

Scattering of Phonons by Holes in p-Type

HgTe : V. Radhakrishnan and P. C. Sharma. 465

Thermal Conductivity of a Composite at Low

Temperature : V. Vaaudeva Rao, G. Rangarajanand G. Swaminathan. 466

TRANSPORT PROPERTIES OF SOUPS

Mobility for Diffusion-cum-Localised

Oscillation : V. Balakrlshnan and

G. Venkataraman. 467

Motion of two Impurity Atoms in a

Harmonic Lattice : R. R. Furi and

S. V. Lawande. 471

The Diffusion of Cobalt in KC1 Crystals :

K. V. Reddy and M. P. Dominic Damlen. 475

Optimization of Thermoelectric Figure of

Merit in Silicon-Germanium Alloys at High

Temperatwre : C. M. Bhandari and D. M. Rowe. 477

MAGNETIC PROPERTIES OF SOLIDS

Alloy Analogy in the Extended Hubbard Model :

Kuruvllla Eapen. Dipan K. Ghosh and R. P. Singh. 481

Multlband CPA Calculation In FerromagneticNickel Ruthenium Alloys s R.

i

Chakravarthy

and L. Madhav Rao. 484

Theory of Magnetic Susceptibility of <£ -Cerium :

J, C. Mohantv and F.K. Misra. 487

Comments on Spin Glasses : F. Shukla. 490

Infinite Clusters in Quenched AB Alloys :

M. Barma. 493

-*vil-

E2&&.

Cluster Bethe Lattice Calculations of the

Electronic Structure of Si-Ge Alloy Described

by Weaire Thorpe Harailtonian : P. Chaudhurl

and R.K. Moitra. 496

An Exactly Soluble Model of Spin Glasses :

Deepak Dhar and N. Kumar (Presented byH. R. Krishna Murthy) 499

Anderson Localisation on a Disordered Series -

Parallel Lattice : a G. Satyanarayana,

N. Devaraj and N. Kumar. 502

Renormalisation Group Study of Anisotropic

Classical Spin System : R. B. Fandey,

D. Kumar and M. Barma. 505

Hyperfine Fields at Al Site in Sm, Gd Al

Alloys : A.K. Groverf 5.K. Dhar,"X x

S. K. Malik, R. Vijayaraghavan and K. Shimlsu. 508

Quadrupole Interaction Studies of Cd in

R Ni, (R = Rare Earth) Compounds :

S. H. Devare, R. G. Pillar. S. K. Malik and

H. G. Devare.511

Electric Quadrupole Interaction of l81Ta in

R Nig Compounds : M. B. Kurup, K. G. Prasad,

S.K. Malik and R. P. Sharma. 515

Magnetic Measurements on the Single Crystals

of Rare Earth Bromates and a Study of the

Effects of the Crystal Field : D, Neogy,

A. Chatterii and T. Purohit. 518

A Study of Magnetic Properties of Some Hydrated

Selenates : D. Neogy and J. Nandi. .

521

Piezo-Magnetic Studies in Iron-Group Crystals :

S. Subharathanam.525

An Appraisal of the Crystal Field in

Nd,Mg (NO,)12 24H20 : D. Neogy, A. Neogy

and. A3Chatter3i. 528

-xviii-

17. Atomic and Magnetic Ordering in

Cu2_x PdxMnAl : S. K. Paranjpe.

R, J. Begum and N. S. Satya Murthy.

18. Covalency Effects in the Magnetic Form

Factor of Yb FeQ 91Co 09°3 : S. K. Paranjpe

and R. J. Begum.'

19. Orbital and Covelency Effects on Magnetic

Scattering from Transition Metal FerovskiteB

J. K. Sharma and D. C. Khan (Presented byM. Mishra).

20. Study of Magnetic Properties of Tl

Substituted NiQ 3ZnQ ?Fe20 Ferrites :

M. Miara. D, C. Khan and A. R. Dass.

21. Spin-Ordering in Fe-Zn-Cu Ferrites :

G. Srinivasan.

22. Correlation between Damping Constants

£ and A in Folycrystalline Garnets :

Om Prakash and R. Aiyar.

*23. Measurement of Effective Line Width

Using a Partially Filled Cavity Technique :

N. S. Hanumantha Rao and M. J. Fatnl.

*24. Magnetic Susceptibility Measurements on

Rb2CoCl4 from Room Temperature to 4. 2 K

R. E. Amritkar, A. V. Nalini and

R. Srinivasan.

"25. Mossbauer Effect Studies on Some SpinelFerrites : P. Muthukumarasamy,T. Nagarajan and A. Narayanasamy.

"26, Mossbauer Study of Co Mn, n_xFe .O.

and Nl Mn, „Fe .O*: V.K." Singh,

B, K. Srivastava, R. Chandra and

S. Lokanathan.

"27. A Mossbauer Effect EFG Study and Lattice

Sum Calculations in Phlogoplte :

Anjali Krishnamurthy, B. K. Srivastava and

S. Lokanathan.

-XIX-

Es&L

"28. Mossbauer Effect, Ionic Conductivity,Thermoluminescence and Ionic Thermo-

conductivity Studies of the Electron SpinDynamics in Magnetically Ordered Fe3+ :

NiTiO, System : R. Nagarajan,J. K. Srivastava and S. Muralidhara Rao.

"29. Mossbauer and ESCA Studies of Iron

Tellurium Compounds : S. H. Devare,R. G. Fillay and H. G. Devare.

"30. An Optical Method for Absolute Cali¬

bration of Mossabuer Spectrometers :

Mashhood Ali, Alimuddin, Shahld Kareem

and K. Rama Reddy.

"31. Stochastic Cyclotron Resonance of Hopping

Charge Carriers : A. M, Jayannavar and

N. Kumar.

"32. Magnetic Relaxation Effects in the Mossbauer

Spectrum of Fe2+ in Gillespite (BaFeSi4Ol0) :

K. K. P. Shrivastava and S. N. Mishra.

"33. Quadrupole Antishielding Factors for HalogenIons from Non-Orthogronal Hartree-Fock

Perturbation Theory : K. K. Prasad Rao and

N. C. Mohapatra.

"34. Calculation of Various Contributions to Hyper-fine Field in Rare Earths on Fe and Ni :

D,K. Sharma and D. K. Gupta.

35. Ferromagnetic Resonance Studies la

Mn FexSb System : K. V. S. Rama Rao,

V. Seshubai and C. Ramasastry.

36. Ferromagnetic Resonance in Nickel-Zinc

Copper Ferrites ; T. T. Srinivasan and

M. J. Fatni.

37. FMR Studies on Polycrystalline Nickel-

Magnesium Ferrites : K. Seshan, M. J. Patni

and A. B. Biswas.

38. Microwave Properties of DysprosiumSubstituted Yttrium Iron Garnets :

N. S. Hanumantha Rao. M. J. Patni and

CM. Srivastava. 590

39. Calculation of Electric-Field-Gradient in

Dilute Alloys with Cubllc Host and Non-

Magnetic Substitutional Impurities :

K. K. Prasad Rao and N. C. Mohapatra. 593

*40. 121Sb and 123Sb NMR Studies in Ferri-

magnetlc Mn2Sb : K. V. S. Rama Rao,

S. L. Pinjare and C. Ramasastry. 597

*41. Mossbauer Studies of Europium Compounds :

D.K. Sharma and D. K. Gupta. 598

*42. Mossbauer Study of the Copolymers of Iron

and Nickel Methacrylates in Methacyllc Acid :

P. R. Sarma, K. C. Trlpathl and H. M. Gupta. 600

"43. EFR of Off-Centred Ni+ at Interstitial Sites in

NH.Cl Single Crystals : M. D. Sastry and

B.D. Joshl. 601

"44. Optical and ESR Studies of H° Centres in

RbCl Crystals : S. B. a Sastry, S. Sapru and

K. Subba Ramaiah, 604

"45. EFR Studies on Low Temperature Phase of a

Co-operative Jahn-Teller System : A K. Pal

and J. Sthanapati. 607

"46. EPR Study of Copper Fluoslllcate Hexahydrate :

A.K. Pal, D.K. Dey, AK. Ghoshal and

J. Sthanapati. 609

"47. Host Lattice Effects on Impurity EPR in

Paramagnetic Host Single Crystals :

R. S. Saraswat, G. C. Upreti. 612

"48. EPR Study of Vanadyl Impurity Ions in Some

Crystalline Solids : V. K. Jain, R. S. Saraswatand V.K. Kaushik. 615

-xxi-

Paee

"49. EPR Study of MnZ+ Doped Zinc

Malonate Dihydrate ! S. Ojha, R. Rajan,K. V, Lingam and B.N. Bhattacharya. 618

"50. ESR Studies of Ferroelectric Phase Transition

in (NH4)2S04 : N. C. Mishra and R. Srinivasan. 621

"51. ESR Study of Y -irradiated Ba(C104)2. 3H20 :

D. L. Sastry and K. V. S. Rama Rao. 624

"52. ESR and Optical Study of V02+ in KHC.O.

Crystals : S. Radhakrishna and M. Salagram. 627

53. Valence State of Cerium in its Intermetallics :

E. V. Sampathkumaran. L. C. Gupta and

R. Vijayaraghavan. 630

54. Valence Fluctuation Studies in EuCu2Si2 :

S. H. Devare, H. G. Devare and

J. A. Cameron. 633

55. UB NMR Study of the Intermediate Valent

SmBfc : M. Bose. K. Roy and A. Basu, 636

56. 203Fb NMR Knight Shift Studies in Sm Fb,:S.K. Dhar. AK. Grover, S.K. Malik and

R. Vijayaraghavan. 639

57. Knight Shift in Lead-Salt Semiconductors :

G. S. Tripathl and P.K. Misra. 642

58. Fourier Transorm of Deuteron Modulation of

Electron Spin Echo Envelope of Ag in D20 and

CD OD at 4. 2 K : B. Aruna. Y. V. S. Ramakrishna

anffP. A. Narayana. 645

59. Fourier Transform of Electron Spin Echo

Modulation in Hemoglobin Azide at 4. 2 K :

Y. V, S. Ramakrishna and F. A Narayana. 648

*60. Optical, E, S. R. and TL Studies of RbtC03 :

S. B. S. Sastry, S. Madhu and S. Sapru. 651

*61. An ESR Study of OXY-Radicals of Bromine in

Sr(Br03)2.H20 s Y -Irradiated at LNT and RT :

* D. L. Sastry, K. V. S. Rama Rao. 652

-xxll

Page

*62. E. S. R. and Optical Absorption Studies of

Cr3+ In Sodium Zinc Sulphate Tetrahydrate z

S. Madhu and B. S. V. a R. Acharyulu. 653

*63. Calculation of g-Values for a ParamagneticCentre in X-Irradiated Zinc Silicate s

C. Prasad and Sulata Chakravarty. 654

*64. Paramagnetic Resonance Studies of a Natural

At-Cut Quartz Crystal Irradiated by X - and

Gamma Rays : Harish Bahadur, S. K. Guptaand R. Prasad. 655

65. NMR Studies of CH NHjBr and CHjND Br at

High Pressure and "Low Temperatures :

R. Kallperumal. K. V. Ramanathan and

R. Srinivasan. 656

66. Proton Spin Lattice Relaxation Investigations

in Dicalclum Barium Propionate : C. S. Sundaram.

K. Ganesan and J. Ramakrishna. 660

67. H Spin Lattice Relaxation and Correlation Studies

in Some Phenolic Mannichbases : M. Jevarai and

J. Sobhanadri. 662

*68. NQR Investigations in Crystalline 2, 5-Dl-

Chloroacetanilide : K. K. Vijaya Kumar,

D. V. Ramana Murtl, P. Venkatachar 665

69. 2D NMR Study of the Phase Transition in

CoSiF&, 6D20 : M. Bose. A Ghoshray,

A. Basu and K. Roy. 667

70. 1<*F Spin-lattice Relaxation Time Studies in

RbCaF3 : S. V. Bhat and F. P. Mahendroo. 671

*71. Chlorine' NQR in Four Pyridine Derivatives of

Biological Importance : a P. Basavaraju,

N. Devaraj, A. Indumathy, K. R.- Sridharan

and J. Ramakrishna. 675

*72. Study of Internal Motions in 2, 5-Dichloro

3, 6-Di-Hydroxy-P-Benzoquinone and 3,4-

Dichlorophenol Using NQR : R. Chandramani,

N. Devaraj, A. Indumathy and J. Ramakrishna. 676

-xxiti-

Page

79*73. Br NQR Zeeman Study in Sr(BrO ) . HO

and Cd(Br03)2. 2H O t R. Valli anf

K. V. S. Rama Rao. 678

*74. ESR Study of Y* -irradiated Zinc Malonate

Dlhydrate : S. Ojha, R. Rajan, K. V. Lingam

and B. N. Bhattacharya. 680

*75. ESR Studies of Cu2+ in Some Inlines :

S. P. Harish, J. Sobhanadri and B. A. Sastry. 681

*76. ESR Studies of Cu and (Cu, Cd) Iminodiacetate

Single Crystals : S.K. Datta and D. De. 682

VU. PHASE TRANSITIONS

1. 1H NMR Study of Phases Transitions in MBBA :

M. Boae. S. Ganguli, A, Ghoshray and A. BaBU. 683

*2. Low Temperature Transition in Teflon FEP :

J. P. Jog, S. J. Walzade and S. V. Bhoraskar. 687

3. High Pressure Phase Transitions in FeS :

C. Karunakaran, V. Vijayakumar, S. N. Vaidya

and N. S. Kunte.688

4. Study of Doppler Broadening of Positron

Annihilation Radiation in (Sin- gGd- 2)SAcross Valence Transition : A*. Bha'rathi.

K. P. Gopinathan, S. K. Sarkar, C. S. Sundar

and B, Vlswanathan.691

5. Theory of Structural Phase Transitions in

Alkali-Superoxides : S. P.- Mahanti. 694

*6. Electrical Conductivity Studies in Pure and

Doped NaNO, Single Crystals : S. K. Gupta

and S.D. Pandey.697

7. Spin Alignments in Low Temperature Magnetic

Phase of Trans-Uranium and Rare-Earth

Bromides and Iodides : M.K. Sikdar and

.P.,-aui.ya,,iii

8. Direct Evidence of Intermediate State during

Alpha-Omega Transformation in Tt~V Aljoy :

Y.K. /phya.... S.X Sikka, E. S.K, Menoa and

R. Krishnan.

698

701

-xxiv-

Page.

Effect of Anhrmonicity on the Phonon

Instability in One-Dimensional Electronic

System : B. P. Barua, B. K. Chakrabarti

and S. K. Sinha (Presented by P. Rudra). 704

Exact Dynamics and Thermodynamics of a

Model System Exhibiting First Order

Structural Phase Transition : S, N. Behera

and Avinash Khare. 708

SURFACE AND INTERFACES

Surface Composition of Binary Alloys :

NtC. Jain and V. C. Sahni. 711

Growth Kinetics of Perfect Sharp SingularInterfaces : S, Vasudevan, S. Nagalingam.

P. Ramasamy and G. S, Laddha. 714

Adsorption and Thermal Desorption of LaBs

on Molybdenum Surface Using Field Emission

Microscopy : C. V. Dharmadhikari, D. a Joag

and P. L. Kanltkar. 717

Surface Fplaritons in Excitonic Semiconductors :

G. Mukhopadhvav. 721

Surface Flasmons for Diffuse Surface :

G. Mukhopadhvava. 725

On High Frequency Response in InhomogeneousElectron System : G. Mukhopadhvav. 727

Effect of C\~ Ions on Stability on n-InF/NaOHInterface : Y. Ramprakash. a Basu and

D.N. Bose. 730

Localized Adsorption in One Layer an. Crystal-Impure Solution Interfaces : R. Dhanasekaran

and F. Ramasamy. 733

A Study of Double Layers Associated with the

Erthyrocyte Sedimentation : O. P. Khandelwal

and M. M. Baiai. 736

-XXV-

£3&S

DEFECTS AND RADIATION DAMA6E

Photoconductivity Measurement on Ion-

Implanted Thin Bismuth Oxide Films :

A. V. Deshpande, & B. Ogale,

V.N. Bhoraskar andM.R. Bhiday, 739

Resistance Changes in Thin Metallic Films

Under Ion Bombardment : a B. Ogale,S. V. Ghaisas, A a Ogale, V. N. Bhoraskar

and M. R. Bhiday (Presented by

A. V. Deshpande). 743

Thermally Stimulated Current In Nitrogen

Implanted FEP : J. P. Jog, S. B. Ogale,

S. J. Walzade. A S. Ogale, S. V. Bhoraskar,

M, R. Bhiday and V. N. Bhoraskar. 746

Microhardness and Micrestructwe of He-

Irradiated Ni and Amorphous Ni40Fe40P14B^ :

R. V, Nandedkar. S. Panchapakesan and

K. Varatharajan. 749

Effect of Fluctuations during the Radiation

Induced Growth and Shrinkage of Velds in

Molybdenum : K. Krishan. 752

Effect of Ion-Bombardment on the Infrared

Spectra of <C -Quartz : V. Umadevi.

H.K. Sahu, AK. Sood and G.. Venkataraman. 755

Effeet of X-*»y and UV-Irradiation en Optical

Absorption of Fbl, Single Crystals :

P.P. Yadav, K. vt Rao and H. N. Acharya, 759

Studies on Neutron Irradiated Topaz Cleavages :

K. S. Raju.763

Charging of Teflon FEP by Non-Penetrating

Electron Beam i S. J. Walsade, J. F Jog and

S, V. Bhoraskar."b4

Point Defect Calculations in Molybdenum .•

S. P. Mhaskar and P.K. Naik.765

xxvi-

Pag«

Electronic Structure of Point Defects in

Semiconducting Crystals i S. D. Raj,

J. Singh and S. Frakash. 769

Calculation of Correlation Factor In Metallic

Diffusion : D. D. Pruthi. 772

Huang Diffuse Scattering from Interstitials in

an H. C. P. Lattice : Rita Kapoor. 775

Self-Interstitial Configurations in Magnesium :

A Computer Simulation Calculation : H. K. Sahu,

S. Srinivasan and K. Krishna. 778

Defect Production under Pulsed Beam Irradiation

Conditions : K. Krishan, K. G. M. Nalr and

H, K. Sahu. 782

Dechannellng of Protons by Edge Dislocations :

P. K. Bhattacharva. 785

Flux Distribution in Planar Channeling s

S. G. Gaonkar and A. G. Wagh. 788

X-ray Topographic Studies of Calcium Fludride

Crystals : C. C. Desai. 791

Vacancy Migration in i£ -Phase of Hard Metals :

M. N. Vijaykumar. 792

INSTRUMENTATION FOR SOLID STATE STUDIES

ESR Spectrometer for High Pressure Studies :

Shantanu Slnha and R. Srinivasan. 793

A Novel Three-Terminal Dielectric Cell with

Floating Electrode : B. R. Madhu and

P. S. Narayanan. 796

Phase Lock Technique for Random SignalAnalysis : An Application to Mossbauer

Resonance : P.. Raimanl Singh and

K. Rama Reddy. 800

-xxvii'

Page,

Single Layer Photoresist Stencil for Lift¬

off Process : A. K. Gupta, Madhu Prasad,V. S. Tomar and N. D. Kataria. 803

Effect of Finite Collection Angle on Depolari¬

zation Ratio Measurement by Raman Scattering :

S. K. Deb and A. P. Roy. 806

Interpolation and Calibration Scheme for

Germanium Resistance Thermometers :

M. C. Valsakumar, Y. Hariharan,

M. P. Janawadkar and T. S. Radhakrishnan. 809

Elemental Characterization of Jharia's Coal :

S. Priyokumar Singh, Chander Bhan,

S.N. Chaturvedi and N. Nath. 812

Design Considerations of Bridgman Anvil HighPressure Apparatus : Mohammad Yousuf and

K. Govinda Rajan. 815

Angular Correlation of Positron Annihilation

Photons in Solids : C. S. Sundar, A. Bharathi,

K. P. Gopinathan, S. K. Sarkar and B. Vlswanathan. 816

Doubly Oscillating Quartz Crystal for Thin Film

Thickness Measurement : D.K. Kaushik,

S.K. Chattopadhyay and N. Nath. 818

Growth of NaCl Single Crystal by Gel

Technique : C. C. Desai and J. L. Rai. SI >

On the Dielectric Behaviour of NaN02 and TGS :

B. R. Madhu, Ramanath Ravi, T, Shripathi and

P. S. Narayanan.

AUTHOR INDEX