Evaluation of spinodal pressure for gallium nitride in the zinc-blend and wurtzite structures by using different equations of state (EOSs8)‎

Abstract EN

According to the definition of spinodal pressure as the negative pressure at which bulk modulus (of a substance) go to zero.

Extrapolation of variation of bulk modulus results with pressure has been used to evaluate spinodal pressure for GaN in zinc-blende and wurtzite structures using different equations of state (EOS) (Birch-Murnaghan, Bardeen, Libby and Libby, and Born- Mie).

Result obtained in the present work for GaN in the zinc-blende structure using Born-Mie equation of state shows a good agreement with literature.

While results for wurtzite structure, obtained by using Birch-Murnaghan and Bardeen EOSs are in a good agreement with literature.

Present results and many literature show that (Jiuxun, 2005) approach for evaluation of spinodal pressure yield results in less agreement with other works.