Alkali, Chalcogen, Nonmetal, Oxide, Transitional, Elastic stiffness coefficient

• Ba-Na-Nb-O
• K-O-P-Ti
• O-P-Rb-Ti
• Li-Nb-O
• K-Li-Na-Nb-O-Ta
• oxide
• nonmetal
• alkali
• chalcogen
• transitional
• orthorhombic
• tetragonal
• trigonal
• cubic
• hexagonal