Alkali, Ferroelectric, Nonmetal, Structural transitions, Trigonal

• Bi-Na-O-Ti
• Li-O-Ta
• Li-Nb-O
• N-Na-O
• Br-Co-Rb
• temperature for structural transition
• pressure for structural transition
• pressure derivative of transition temperature
• ferroelectric
• nonmetal
• alkali
• chalcogen
• transitional