Antiferroelectric, Chalcogen, Ferroelectric, Real part of permittivity

• Bi-Fe-O
• Bi-Na-O-Ti
• Ba-Bi-Na-O-Ti
• Co-Fe-O
• Na-Nb-O
• chalcogen
• ferroelectric
• antiferroelectric
• oxide
• transitional
• trigonal
• tetragonal
• orthorhombic
• cubic
• monoclinic