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

• La-O-Pb-Ti-Zr
• Bi-Fe-La-O
• O-Pb-Ta-Yb
• La-Nb-O-Sr-Ti
• Mn-O-Tb
• rare earth
• lanthanoid
• chalcogen
• oxide
• transitional
• orthorhombic
• cubic
• tetragonal
• monoclinic
• trigonal