Bi-Fe-O, Chalcogen, Electric polarization

• Bi-Fe-La-O
• Bi-Fe-Nd-O
• Bi-Fe-O-Ti
• Bi-Cr-Fe-O
• values of electric polarization
• spontaneous polarization
• transitional
• chalcogen
• pnictogen
• oxide
• ferroelectric
• trigonal
• orthorhombic
• tetragonal
• triclinic
• cubic