Alkali, Nonmetal, Oxide, Cubic, Dielectric loss tangent

• K-Na-Nb-O
• K-Li-Na-Nb-O-Sb
• Bi-Na-O-Ti
• K-Li-Na-Nb-O
• Ba-Bi-Na-O-Ti
• oxide
• nonmetal
• alkali
• chalcogen
• transitional