Alkaline, Chalcogen, Nonmetal, Real part of permittivity, Trigonal

• Ba-Ca-O-Ti-Zr
• Ba-O-Ti
• Ba-Bi-Na-O-Ti
• Ca-Li-O-Ta-Zr
• Ba-F-K-O-Ti
• nonmetal
• chalcogen
• alkaline
• transitional
• oxide