Alkali, Chalcogen, Oxide, Structural transitions, Trigonal

• Bi-Na-O-Ti
• Li-O-Ta
• Li-Nb-O
• Na-Nb-O
• Li-Na-Nb-O
• temperature for structural transition
• pressure for structural transition
• structural transition
• pressure derivative of transition temperature
• oxide
• chalcogen
• alkali
• transitional
• nonmetal