Alkali, Chalcogen, Disordered, Mechanical properties, Orthorhombic

• C-K-N-S
• Ba-K-N-O
• K-O-P-Ti
• K-Li-Na-Nb-O-Ta
• O-P-Rb-Ti
• elastic moduli
• isothermal bulk modulus
• elasticity
• elastic stiffness coefficient
• sound velocity
• disordered
• chalcogen
• alkali
• transitional