Chalcogen, Nonmetal, Temperature for structural transition

• Ba-O-Ti
• K-Na-Nb-O
• Mg-Nb-O-Pb-Ti
• Fe-O
• S-Ta
• nonmetal
• chalcogen
• transitional
• oxide
• disordered
• orthorhombic
• tetragonal
• cubic
• monoclinic
• trigonal