Chalcogen, Oxide, Electronic and electrical properties, Katiyar

• Fe-O-Pb-Ta
• Bi-Fe-O
• Bi-Fe-La-O
• Fe-Nb-O-Pb-Ta-Ti-W-Zr
• Fe-Nb-O-Pb
• permittivity (dielectric constant)
• dielectric loss tangent
• ferroelectric transitions
• oxide
• chalcogen
• transitional
• ferroelectric
• disordered
• tetragonal
• trigonal
• cubic
• orthorhombic
• monoclinic