research & reviews journal of physics(vol3 issue1)
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Research & Reviews: Journal of Physics
(RRJoPHY) Jan - April 2014
ISSN 2347-9973
STM JOURNALSScientific Technical Medical
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ahniman
Prof. Gautam Mukhopadhyay Department of Physics, IIT, Bombay,
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I take the privilege to present the hard copy compilation for the [Volume 3 Issue (1)] of Research &
Reviews: Journal of Physics (RRJoPHY). The intension of RRJoPHY is to create an atmosphere that
stimulates creativeness, research and growth in the area of Physics.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. RRJoPHY provides an outlet for Research findings
and reviews in areas of Physics found to be relevant for National and International recent
developments & research initiative.
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the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Physics.
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ups/ reviewing and providing constructive comments for the advancement of the journals. With
regards to their due continuous support and co-operation, we have been able to publish quality
Research/Reviews' findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Field Dependence of Third Order Perturbed Energy of Cobalt Ferrite Thick Films P. Samarasekara 1
2. Optical Properties of SiO Nanoparticles Doped PEO-LiClO Nanocomposite Polymer Electrolyte Films 2 4
S. U. Patil, S. S. Yawale, S. P. Yawale 8
3. Spectral Analysis and Estimation of Depths to Magnetic Rocks below the Katsina Area, Northern Nigerian Basement Complex S. B. Muhammad, E. E. Udensi, M. Momoh, Y. A. Sanusi, T. Suleiman, O. Ajana 13
4. Structural Properties and DC Conductivity Study of Barium Hexaferrite Powder Reshma Nandotaria, Atashi Ajmera, Rajshree Jotania 24
ContentsResearch & Reviews : Journal of Physics
RRJoPHY(2014© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Physics ISSN: 2347-9973
Volume 3, Issue 1
www.stmjournals.com
Field Dependence of Third Order Perturbed Energy
of Cobalt Ferrite Thick Films
P. Samarasekara* Department of Physics, University of Peradeniya, Peradeniya, Sri Lanka
Abstract Third order perturbed classical Heisenberg Hamiltonian was modified to describe the variation of magnetic properties and easy axis orientation of cobalt ferrite films with
applied magnetic field and number of layers of the film. According to our theoretical
studies explained in this manuscript, the magnetically easy and hard directions of cobalt ferrite films solely depend on in plane and out of plane magnetic fields. According to 3-D
and 2-D plots, there are many easy and hard directions at one particular value of in plane or out of plane magnetic field. The magnetic properties were investigated for
cobalt ferrite films with thickness up to 10,000 unit cells. The total magnetic energy was
calculated for a unit spin of cobalt.
Keywords: Heisenberg hamiltonian, Cobalt ferrite, Perturbation
RRJoPHY(2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Physics ISSN: 2347-9973
Volume 3, Issue 1
www.stmjournals.com
Optical Properties of SiO2 Nanoparticles Doped PEO-
LiClO4 Nanocomposite Polymer Electrolyte Films
S. U. Patil1*, S. S. Yawale
2 and S. P. Yawale
3
1Department of Applied Physics, Govt. College of Engineering, Chandrapur, India
2Pre Indian Administrative Services Training Institute, Nagpur, India
3Department of Physics, Govt. Vidarbha Institute of Science and Humanities, Amravati, India
Abstract The optical transmission and absorption spectra were recorded in the wavelength range
200-800 nm for optimized high conducting concentrations of SiO2 nanoparticles in PEO-
LiClO4 -m wt% SiO2 polymer matrix. Values of absorption coefficient, direct band gap energy, measure of extent of band trailing or Urbach energy, absorption edge and
constant, B, have been investigated by optical characterization method. Effect of
concentration of SiO2 nanoparticles in the polymer matrix on these parameters has been discussed. It has been observed that addition of SiO2 nanoparticles increases structural
disorder and fluctuations of the internal fields associated with it. Small change in the
concentration of SiO2 nanoparticles changes optical properties of nanocomposite polymer matrix. It was also found that direct band gap fits in the lower energy region of
fundamental absorption edge.
Keywords: Absorption coefficient, optical energy gap, optical properties, absorption
edge, Urbach energy, bang trailing, nanocomposite polymer matrix
RRJoPHY(2014)© STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Physics ISSN: 2347-9973
Volume 3, Issue 1
www.stmjournals.com
Spectral Analysis and Estimation of Depths to Magnetic
Rocks below the Katsina Area, Northern Nigerian
Basement Complex
S. B. Muhammad1*, E. E. Udensi
2, M. Momoh
1, Y. A. Sanusi
1, T. Suleiman
3 and O. Ajana
1
1Department of Physics, Usmanu Danfodiyo University, Sokoto
2Department of Physics, Federal University of Techonology, Minna
Abstract Airborne magnetic data over the Katsina area of the Northern Nigerian Basement
Complex were analyzed and interpreted in this study. The study area covers parts of the
Northern Nigerian Basement Complex, bounded by longitudes 7000’
and 8
0 30’; and
latitudes 12030’ and 13
030’. Regional-Residual Separation was carried out using Least
Square Method. The resulting regional map revealed a regional trend in the NE-SW
direction. The magnetic residual values ranged from -329.74 nT to 202.91 nT. Method of spectral analysis was applied to the residual data. The result revealed two distinct layers.
The first layer which occupies the high frequency tail is due to the effects of shallower ensembles of magnetic sources and noise in the data. The first layer depth ranges from
0.04 km to 0.74 km. The second layer is associated with the intermediate frequencies and
lies between the depths of 0.1 km and 0.80 km. The lowest depth of 0.1 km occurred.
Keywords: Spectral analysis, katsina area, basement complex
RRJoPHY(2014) © STM Journals 2014. All Rights Reserved
Research & Reviews: Journal of Physics ISSN: 2347-9973
Volume 3, Issue 1
www.stmjournals.com
Structural Properties and DC Conductivity Study of
Barium Hexaferrite Powder
Reshma Nandotaria1, Atashi Ajmera
2, Rajshree Jotania
3*
Department of Physics, University School of Sciences, Gujarat University, Ahmedabad, India
Abstract M-type barium hexaferrite powder with chemical composition BaFe12O19 has been
synthesized using Co-precipitation method. High purity Nitrates, Oxides and Carbonates of Iron (III), Barium (II) and Ammonium Hydroxide were used as starting materials. The
prepared precursors calcined at temperature 950 °C for 4 h in a furnace and
characterized by FTIR, SEM, XRD, TGA and DC conductivity measurements. Microstructure of prepared samples was observed via SEM. X-ray diffraction studies
confirm the presence of a single phase with the theoretical space group P63/mmc barium hexaferrite (BaM), which crystallizes in the hexagonal system and has a uniaxial
magnetoplumbite structure, displays good chemical stability and structural properties.
Keywords: Barium hexaferrite, XRD, SEM, TGA