Alkali, Chalcogen, Disordered, Ferroelectric, Elastic stiffness coefficient

• H-K-O-P
• Ba-Na-Nb-O
• N-Na-O
• C-H-K-O
• K-O-P-Ti
• disordered
• ferroelectric
• alkali
• chalcogen
• nonmetal
• orthorhombic
• tetragonal
• trigonal
• monoclinic
• hexagonal