Alkali, Nonmetal, Transitional, Dielectric loss tangent, K-Nb

• K-Na-Nb-O
• K-Li-Na-Nb-O-Sb
• K-Li-Na-Nb-O
• Bi-K-Na-Nb-O-Ti
• Bi-K-Mg-Na-Nb-O-Ti
• nonmetal
• transitional
• alkali
• chalcogen
• oxide
• tetragonal
• cubic
• orthorhombic
• monoclinic
• trigonal