Ferroelectric, Transitional, Katiyar

• Fe-Nb-O-Pb
• Fe-O-Pb-Ta
• Bi-Fe-O
• Bi-Fe-La-O
• Ca-Cu-O-Ti
• electronic and electrical properties
• permittivity (dielectric constant)
• optical properties
• magnetic properties
• phonons
• chalcogen
• ferroelectric
• transitional
• oxide
• disordered
• tetragonal
• cubic
• trigonal
• monoclinic
• orthorhombic