Chalcogen, Oxide, Rare earth, Cubic, Real part of permittivity

• La-O-Pb-Ti-Zr
• La-Mn-O-Pb-Ti
• O-Pb-Ta-Yb
• Fe-O-Y
• Nb-O-Pb-Sc
• rare earth
• oxide
• chalcogen
• transitional
• lanthanoid