Chalcogen, Oxide, Structural transition

• Eu-O-Ti
• Fe-O
• Ge-K-Na-Nb-O
• Ca-Co-O
• Ba-Co-Ho-O
• chalcogen
• oxide
• transitional
• disordered
• non-disordered
• cubic
• orthorhombic
• monoclinic
• tetragonal
• trigonal