Alkali, Chalcogen, Oxide, Real part of permittivity

• Bi-Na-O-Ti
• Ba-F-K-O-Ti
• K-Na-Nb-O
• Ba-Bi-Na-O-Ti
• Na-Nb-O
• oxide
• alkali
• chalcogen
• transitional
• nonmetal
• cubic
• tetragonal
• orthorhombic
• trigonal
• monoclinic