Ba-Sr, Ferroelectric, Temperature for structural transition

• Ba-O-Sr-Ti
• Ba-Nb-O-Sr
• Ba-Bi-Nb-O-Sr
• Ba-Ca-O-Sr-Ti
• Ba-Na-Nb-O-Sr
• chalcogen
• ferroelectric
• alkaline
• transitional
• nonmetal
• tetragonal
• cubic
• orthorhombic
• trigonal
• monoclinic