fig6

Figure 6. The directional dependence of E: (A) KGaSe₂-I4₁/amd; (B) KGaTe₂-I4₁/amd; (C) KInSe₂-I4₁/amd; (D)KInTe₂-R3̅m; (E)CsInTe₂-R3̅m. And the construction of the corresponding system on 2D xy, xz, and yz projection planes. E: Young’s modulus.