Chalcogen, Transitional, K-Nb, Real part of permittivity

• K-Na-Nb-O
• K-Li-Na-Nb-O
• Fe-K-Li-Nb-O-Ta
• Ba-K-Na-Nb-O-Ti
• K-Li-Na-Nb-O-Sb
• transitional
• oxide
• alkali
• chalcogen
• nonmetal
• tetragonal
• cubic
• orthorhombic
• monoclinic