Alkali, Chalcogen, Ferroelectric, Elasticity, Tetragonal

• H-K-O-P
• Ba-Na-Nb-O
• B-Li-O
• H-O-P-Rb
• As-H-K-O
• elastic stiffness coefficient
• elastic compliance
• pressure derivative of elastic stiffness coefficient
• chalcogen
• ferroelectric
• alkali
• nonmetal
• disordered