Study of effect of temperature on phase transition pressure of GaAs and GaSb

2nd International Conference on Materials Science and Technology

Pawar, Pooja^1 ; Abdul Shukoor, V.^1 ; Singh, Sadhna^1

High Pressure Research Lab, Department of Physics, Barkatullah University, Bhopal, MP

462026, India^1

关键词: Effect of temperature;    First-order phase transitions;    Interaction potential models;    Pressure-induced phase transition;    Repulsive interactions;    Three-body interaction;    Transition pressure;    Volume collapse;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/360/1/012060/pdf
DOI  :  10.1088/1757-899X/360/1/012060

来源: IOP

【 摘 要 】

We have presented the pressure induced phase transition of GaAs and GaSb from zinc blende (ZB) to rocksalt (NaCl) structure associated by using realistic interaction potential model (RIPM), which is modified by taking effect of temperature. This model consists of coulomb interaction, three body interaction and short range overlap repulsive interaction up to second neighbor. Phase transition pressures are associated with a sudden collapse in volume showing the occurrence of first order phase transition. The phase transition pressure (Pt) and volume collapse obtained from this model show a reasonable agreement with experimental and theoretical results.