Research & Reviews: Journal of Physics

(RRJoPHY) May - August 2014

ISSN 2347-9973

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Christ University, BangaloreIndia.

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and University of TennesseeUSA.

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Prof. S.C. Agarwal Emeritus Scientist, Department of Physics,

Indian Institute of Technology, India.

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Electrical Engineering, IIT, Kanpur, India.

ahniman

Prof. Gautam Mukhopadhyay Department of Physics, IIT, Bombay,

India.

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India.

I take the privilege to present the hard copy compilation for the [Volume 3 Issue (2)] 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.

The aim and scope of the Journal is to provide an academic medium and an important reference for

the advancement and dissemination of Research results that support high level learning, teaching and

research in the domain of Physics.

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their continued support and invaluable contributions and suggestions in the form of authoring write-

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. First Principles Band-gap Calculations of 3d Transition Metals-added Rock-salt ZnO M. Ashraf, A. Afaq 1

2. Fragility of Ge S Glass Forming Liquid 40 60

G. Saffarini, A. Saiter, J. M. Saiter 5

192-1963. High-Spin Structure in Pt Isotopes Huda H. Kassim, Fadhil . Sharrad 11

4. Compositional and Optical Properties of Sb Doped ZnO Thin Films Bhuiyan M. R. A., Begum J., Hoq E. 18

ContentsResearch & Reviews : Journal of Physics

RRJoPHY (2014)© STM Journals 2014. All Rights Reserved

Research & Reviews: Journal of Physics ISSN: 2278-2265 (online), ISSN: 2347-9973 (print)

Volume 3, Issue 2

www.stmjournals.com

First Principles Band-gap Calculations of 3d Transition

Metals-added Rock-salt ZnO

M. Ashraf, A. Afaq* Centre of Excellence in Solid State Physics, University of the Punjab Lahore, Pakistan

Abstract The band-gaps of rock-salt Zinc Oxide added with 3d transition metals (TM = Mn, Fe,

Co, Ni) are estimated by Density Functional Theory (DFT) as implemented in the

WIEN2k code. We employed Full Potential Linearized Augmented Plane Wave (FP-LAPW) method, within the Local Density Approximation (LDA) and the Generalized

Gradient Approximation (GGA), in order to find band-structures of Zn1-x(TM)xO alloys

at x = 25, 50, and 75%. The results showed metallic nature for all TM-doped ZnO alloys, contrary to the semiconducting nature as predicted by the experimentalists. This reveals

an inadequacy of simple LDA and GGA schemes for band-gap calculations of highly correlated systems as in our case.

Keywords: Band-gaps, Density Functional Theory, Transition Metals, LDA, GGA

RRJoPHY (2014)© STM Journals 2014. All Rights Reserved

Research & Reviews: Journal of Physics ISSN: 2278-2265 (online), ISSN: 2347-9973 (print)

Volume 3, Issue 2

www.stmjournals.com

Fragility of Ge40S60 Glass Forming Liquid

G. Saffarini1*, A. Saiter

2, J. M. Saiter

2

1Physics Department, An-Najah National University, Nablus, Palestinian Authority

2Laboratoire PBM, UMR 6522, LECAP, Institut des Matériaux de Rouen, Faculté des Sciences,

Avenue de l’Université BP 12, 76801 Saint Etienne du Rouvray, France

Abstract From differential scanning calorimetry (DSC) measurements performed on Ge40S60

chalcogenide glass forming liquid, the values of the apparent activation energy ∆h*, and

the fragility index, m, as defined in the strong-fragile glass forming liquid concept, have

been determined. The calculated value of m for this glass forming liquid is equal to 82.

From this m value, it is suffice to conclude that this glass forming liquid belongs to an

intermediate category that exhibits a kinetic behaviour between strong and fragile.

PACS: 61.43.Fs; 64.70.Pf; 65.60. +a

Keywords: Strong-fragile concept, Ge-S glasses, Differential scanning calorimetry

RRJoPHY (2014)© STM Journals 2014. All Rights Reserved

Research & Reviews: Journal of Physics ISSN: 2278-2265 (online), ISSN: 2347-9973 (print)

Volume 3, Issue 2

www.stmjournals.com

High-Spin Structure in 192-196

Pt Isotopes

Huda H. Kassim, Fadhil I. Sharrad* Department of Physics, College of Science, University of Kerbala, Karbala, Iraq

Abstract The

192-196Pt isotopes with proton number Z=78 and neutron numbers (n) are 114,116,

and 118 in O(6) region were investigated. The energy level, E2 transition probabilities, and the potential energy surface have been calculated within the framework using

Interacting Boson Model (IBM-1). The calculated results are compared with the most recent experimental data. Good agreements are obtained between the theoretical and

experimental results for 192-196

Pt isotopes. The contour plot of the potential energy

surfaces shows that the interested nuclei are deformed and have γ-unstable-like characters.

Keywords: IBM-1, Neutron-rich, B(E2) values, Energy levels, Potential

energy surface

*Author for Correspondence E-mail: fadhil.altaie@gmail.com

RRJoPHY (2014)© STM Journals 2014. All Rights Reserved

Research & Reviews: Journal of Physics ISSN: 2278-2265 (online), ISSN: 2347-9973 (print)

Volume 3, Issue 2

www.stmjournals.com

Compositional and Optical Properties of Sb Doped

ZnO Thin Films

Bhuiyan M. R. A.1*, Begum J.

2, Hoq E.

1

1Department of Applied Physics, Electronics and Communication Engineering,

Islamic University, Kushtia, Bangladesh 2Experimental Physics Division, Atomic Energy Centre, Dhaka, Bangladesh

Abstract Sb doped ZnO thin films were deposited onto cleaned glass substrates at different

substrate temperature by using thermal evaporation method in vacuum. The atomic

compositions of the grown films have been determined by Energy Dispersive Analysis

of X-ray (EDAX) method by using an attachment to the Scanning Electron

Microscope. The optical properties were measured in the photon wavelength ranging

in between 300 and 2500 nm by using a UV-VIS-NIR spectrophotometer. An EDAX

spectrum reveals that Sb is doped into the ZnO thin films. The film shows higher

transmittance in infrared regions and reflectance in UV regions. The films have high

absorption co-efficient (~105 cm

1) above the fundamental absorption region that

direct allowed transitions band gap. The band gap energy of the films found from

2.409 to 2.929 eV for substrate temperature variation.

Keywords: Sb doped ZnO, Compositional properties, Optical properties, Band gap

energy