Cell and atoms, Elastic moduli, Tetrahedron 4-vertex, Trigonal

• S-Zn
• C-Si
• In-S-Zn
• As-Cu-Se
• Fe-Ga-S
• isothermal bulk modulus
• shear modulus
• Young modulus
• Poisson ratio
• chalcogen
• transitional
• disordered
• non-disordered