Alkali, Chalcogen, Non-disordered, Temperature for structural transition

• Na-Nb-O
• K-Li-O-S
• H-K-O-P
• Na-O-V
• K-Nb-O
• chalcogen
• non-disordered
• alkali
• nonmetal
• transitional
• monoclinic
• orthorhombic
• tetragonal
• trigonal
• cubic