Compression behavior and phase transition of β-Si3N4 under high pressure

Compression behavior and phase transition of β-Si₃N₄ under high pressure

Gong Hong-xia¹, Kou Zi-li^{1, †}, Fan Cong¹, Liang Hao¹, Wang Qi-ming¹, Zhang Lei-lei¹, Peng Fang¹, Yang Ming¹, Ni Xiao-lin¹, Liu Jing²

(color online) (a) The XRD pattern of the initial β-Si₃N₄ powder under normal pressure and room temperature. Black solid line: measured pattern, red short vertical lines: all possible Bragg positions. (b) The SEM image of the initial β-Si₃N₄ powder.