Ab initio calculations on oxygen vacancy defects in strained amorphous silica
Zhou Bao-Hua1, †, Zhang Fu-Jie1, Liu Xiao1, Song Yu2, 3, Zuo Xu1, 4, ‡, ‡
       

Calculated (a) histogram of Si–O bond length at different strains and (b) lattice parameters versus the applied strain. Black square, red circle and blue triangle represent lattice constants a, b, and c, respectively. The volume of the model is plotted against the strain in the inset of (b).