Alkali, Transitional, Temperature for structural transition

• K-Na-Nb-O
• Na-Nb-O
• Bi-Na-O-Ti
• Na-O-V
• As-Ba-Fe-K
• transitional
• alkali
• chalcogen
• oxide
• nonmetal
• orthorhombic
• tetragonal
• cubic
• monoclinic
• trigonal