Alkali, Chalcogen, Ferroelectric, Elasticity

• H-K-O-P
• C-H-K-O
• H-Li-N-O-S
• Li-O-Rb-S
• H-O-P-Rb
• elastic stiffness coefficient
• elastic compliance
• temperature dependence of elastic stiffness coefficient
• ferroelectric
• chalcogen
• alkali
• nonmetal
• non-disordered
• orthorhombic
• tetragonal
• monoclinic
• trigonal
• hexagonal