Alkali, Chalcogen, Oxide, Dielectric loss tangent, Orthorhombic

• K-Li-Na-Nb-O-Sb
• Li-Na-Nb-O
• K-Li-Na-Nb-O
• K-Na-Nb-O
• Bi-Na-Nb-O-Sr
• oxide
• transitional
• alkali
• chalcogen
• ferroelectric