Compression behavior and phase transition of β-Si3N4 under high pressure
Gong Hong-xia1, Kou Zi-li1, †, Fan Cong1, Liang Hao1, Wang Qi-ming1, Zhang Lei-lei1, Peng Fang1, Yang Ming1, Ni Xiao-lin1, Liu Jing2
       

(color online) Pressure dependence of the normalized unit-cell volumes in β-Si3N4 measured from 0 to 37.0 GPa at room temperature. The black solid squares represent the experimental data. The red solid and blue dashed lines correspond to the fitting results generated via second- and third-order Birch–Murnaghan EOSs, respectively.