Chalcogen, Oxide, Kartashev

• Na-Nb-O
• Fe-O-Sm-Ti
• Fe-Ge-Li-O
• Eu-La-Mn-O-Pb
• F-K-Mo-O-Rb
• thermal and thermodynamic properties
• magnetic properties
• phase transitions
• structural transitions
• temperature for structural transition
• chalcogen
• oxide
• transitional
• alkali
• non-disordered
• orthorhombic
• trigonal
• monoclinic
• cubic
• tetragonal