Chalcogen, Oxide, Structural transitions, Tetragonal

• Ba-O-Ti
• O-Sr-Ti
• Mg-Nb-O-Pb-Ti
• K-Na-Nb-O
• Ba-Ca-O-Ti-Zr
• temperature for structural transition
• pressure for structural transition
• structural transition
• chalcogen
• oxide
• transitional
• disordered
• ferroelectric