Phase transitions, Tetraoxoselenate

• H-N-O-Se
• H-O-Rb-Se
• Cs-H-O-Se
• K-O-Se
• K-Na-O-Se
• temperature for congruent melting
• fusion
• structural transitions
• temperature for structural transition
• decomposition
• chalcogen
• tetraoxoselenate
• non-disordered
• alkali
• monoclinic
• orthorhombic
• triclinic
• trigonal
• tetragonal