Kucheiko

• Ca-Fe-Nb-O-Pb-Sn
• Ca-Fe-La-Na-Nb-O-Ti
• Al-O-Ta
• Ca-Li-Nb-O-Ti
• Mg-O-Ta
• electronic and electrical properties
• permittivity (dielectric constant)
• structural properties
• quality factor
• temperature coefficient of resonant frequency
• transitional
• chalcogen
• alkaline
• multinary
• quinary
• orthorhombic
• cubic