Alkali, Chalcogen, Nonmetal, Structural transitions

• K-Na-Nb-O
• H-Li-N-O-S
• Bi-Na-O-Ti
• K-Li-O-S
• H-K-O-P
• temperature for structural transition
• pressure for structural transition
• pressure derivative of transition temperature
• alkali
• nonmetal
• chalcogen
• transitional
• ferroelectric
• tetragonal
• orthorhombic
• monoclinic
• cubic
• trigonal