Chalcogen, Lanthanoid, Oxide, Dielectric loss tangent, Trigonal

• Bi-Fe-La-O
• Lu-Nb-O-Pb-Sc
• Fe-O-Yb
• Bi-Fe-O-Pr
• Bi-Fe-Nd-O
• rare earth
• oxide
• lanthanoid
• chalcogen
• transitional