Unusual softening behavior of yield strength in niobium at high pressures

Jing Qiu-Min^†, He Qiang, Zhang Yi, Li Shou-Rui, Liu Lei, Hou Qi-Yue, Geng Hua-Yun, Bi Yan, Yu Yu-Ying, Wu Qiang

(color online) Some typical results of fitting Eq. (4) to the measured line width-data. The experimental data are denoted by solid symbols and the straight lines are the fitting lines.