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Khyber Pakhtunkhwa, Pakistan

Hazara University is located in Dhodial town, Mansehra District, Hazara in the Khyber-Pakhtunkhwa province of Pakistan. The town of Dhodial is near to the city of Mansehra . It was formed in the building and land of Government Mental and General Hospital Dhodial. Hazara University has three faculties: Science, Arts, and Health science.The university was founded in 2002; Hazara University started its operations with meagre resources of one small building for academics and a small administration block.Initially departments of Information Technology, Microbiology, Biochemistry, Chemistry, Education, English, Islamiyat, Cultural Heritage and Tourism Management, Journalism and Mass Communication, Disaster and Rehabilitation Management, Botany, Genetics, Environment science, Economics, Health and Physical Education, Arts and Designing, Political science, Physics, Mathematics Law, and Department of Management science started operations. The University has recently established Department of Conservation Studies to preserve the rich cultural heritage of the country.The university has three campuses: Garden campus , Havelian campus , and Haripur campus . Hazara University is currently ranked at No. 8 in General Universities category of HEC rankings 2011. Wikipedia.

Murtaza G.,Hazara University | Ahmad I.,University of Malakand
Journal of Applied Physics | Year: 2012

The structural and optoelectronic properties of LaAlO 3 under pressure have been investigated for the first time using the highly accurate all electrons full potential linearized augmented plane wave method. The calculated lattice parameter at zero pressure is found in excellent agreement with the experimental results. Furthermore, with the increase in the external pressure, the lattice constant as well as bonds length decreases in accordance with the experimental results. The compound at zero pressure is an indirect bandgap semiconductor, while interestingly the indirect nature shifts to direct one with the increase of the pressure. The bonding in the material is of mixed covalent and ionic nature. In optical properties, frequency dependent parameters such as real and imaginary parts of dielectric function, refractive index, reflectivity, optical conductivity, absorption coefficient, and sumrules are calculated under pressure. © 2012 American Institute of Physics.

Ahmad I.,University of Malakand | Amin B.,Hazara University
Computational Materials Science | Year: 2013

Theoretical calculations of Ga1-xMnxP and Ga 1-xMnxAs (x = 0.125) in the zinc blende phase are presented. The electronic structure and magnetic properties of these compounds are calculated and their correlation is investigated with the lattice compressions. The results show that, both the compounds hold their half-metallic nature, conductor for spin up state and semiconductor for spin down state, with their lattice compressions up to certain critical lattice constants. An abrupt change in the electronic and magnetic properties is observed at these robust transition lattice constants (RTLCs). These compounds loss their integer magnetic moments (4 μβ) and tremendous decrease in the bandgaps (spin down states) start at these critical lattice constants and hence the materials transform from half-metals to degenerate semiconductors. The calculated RTLC for Ga0.875Mn0.125P is 5.14 Å and for Ga0.875Mn0.125As is 5.25 Å. The possible compression in the lattice constants from their relaxed states, while maintaining their half-metallic nature, is up to 6% for Ga 0.875Mn0.125P and 8% for Ga0.875Mn 0.125As. The feasibility of the growth of these compounds on different substrates on the basis of the variation in the lattice constants is also discussed. © 2012 Elsevier B.V. All rights reserved.

Hussain Z.,Abdul Wali Khan University Mardan | Khan K.M.,University of Karachi | Hussain K.,Hazara University
Journal of Analytical and Applied Pyrolysis | Year: 2010

A novel method for the pyrolysis of waste polystyrene was investigated which was based on high temperature by microwave-metal interaction. This interaction may also catalyze the pyrolysis process and affect the nature of products. Polystyrene was rapidly pyrolyzed under microwave while placing in a batch type reactor containing a cylindrical mesh of iron. The iron mesh generates heat in the range of 1100-1200°C which converts polystyrene into 80% liquid, 15% gas and 5% char residue. The liquid product was collected using cold traps and the amount of gas was obtained by taking difference. The liquid product was analyzed using GC/MS and found that it contains styrene in addition to polycyclic aromatics and condensed ring aromatic compounds. The products formation is also discussed. © 2010 Elsevier B.V. All rights reserved.

Hayat S.S.,Hazara University
Computational Materials Science | Year: 2011

Results of molecular dynamics simulation of the diffusion of two-dimensional 13-atom Cu island on Ag(1 1 1), using many-body potentials obtained from the embedded-atom method, are presented. Simulations carried out at three different temperatures - 300, 500 and 700 K - show shape-changing multiple-atom processes are responsible for the diffusion of islet. Arrhenius plot of the diffusion coefficients provide effective energy barrier of 232.06 ± 10 mev and diffusion prefactor 1.034 × 10 13 2/s. A striking and interesting feature of pop-up of single-atom at 500 K and three-atom at 700 K among 13-atom island is observed, with correlative changes in position and shape of the lower-layer adatoms. Surface dynamics in the presence of an island produced dislocations and fissures near the island. © 2010 Elsevier B.V. All rights reserved.

Din H.U.,Hazara University | Reshak A.H.,University of West Bohemia | Reshak A.H.,University Malaysia Perlis
Computational Materials Science | Year: 2014

In present paper, the structural, elastic, thermal, electronic, optical properties at ambient and high-pressure study of Ag2O are performed using the full-potential linearized augmented plane wave (FP-LAPW) method within the framework of Density functional theory (DFT) as implemented in Wien2k Code. We have used the local density approximation (LDA), Generalized Gradient approximation (GGA) and Engel-Vosko generalized gradient approximation (EV-GGA) for calculating structural properties at 0.0-20.0 GPa pressure. The lattice constant obtained at 0.0 GPa using GGA method, is in good agreement with available experimental results. Decrease in lattice constant is observed with increase in pressure from 0.0 to 20.0 GPa. The electronic, optical and band structure calculations are also carried out using modified Becke-Johnson exchange correlation potential plus generalized gradient approximation (mBJ-GGA). At zero pressure, the calculated band gap using mBJ potential is found to be narrow, direct and comparatively better than calculated through LDA, GGA and EV-GGA. Also, the band gap increases with increase in pressure from 0.0 to 20.0 GPa. From elastic calculations, it is noted that Ag2O is elastically stable and have ductile nature. Moreover, it is revealed that Ag2O is suitable for optoelectronic devices. © 2013 Elsevier B.V. All rights reserved.

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