Ab initio study of the effects of helium on the mechanical properties of different erbium hydrides

Mingwen Zhang,Li Li,Zhezhen Zhao,Jinlan Nie,Xiaotao Zu,Hongxiang Deng

Table 3. Calculated values (Gpa) for the elastic modulus.

α-Er β-ErH2 γ-ErH3 No He He-tetra He-octa No He He-tetra He-octa No He He-tetra He-octa Y 70.77 67.27 68.00 144.07 142.65 134.14 140.93 125.72 104.64 G 29.07 27.47 27.86 59.24 58.35 54.32 59.12 51.18 43.49 B 41.67 40.71 40.56 84.53 84.29 84.26 76.23 77.14 58.70 B/G 1.43 1.48 1.46 1.43 1.44 1.55 1.28 1.50 1.34