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      https://www.ias.ac.in/article/fulltext/pram/094/0082

    • Keywords

       

      Gallium nitride; lattice properties; elastic properties; wide band gap; high pressure

    • Abstract

       

      A pseudopotential approach is used to study the lattice and elastic properties of the wide band-gap GaN at zero and high pressures up to 120 kbar. When the pressure is 0 kbar, our findings are generally in agreement with the data reported in the literature. The pressure dependence of lattice constant, polarity, transverse effective charge, elastic constants and their related mechanical parameters, and microhardness has been examined and discussed. Our results show that all these features exhibit a monotonic behaviour against pressure. Upon compression up to 120 kbar, our results suggest that the material in question remains mechanically stable with higher stiffness, becomes more resistant to the deformations or deflections and its chemical bond and rigidity become stronger.

    • Author Affiliations

       

      N BOUARISSA1 H ALGARNI2 3 M AJMAL KHAN2 O A AL-HAGAN2 T F ALHUWAYMEL4

      1. Laboratory of Materials Physics and Its Applications, University of M’sila, 28000 M’sila, Algeria
      2. Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
      3. Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
      4. National Centre for Nanotechnology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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