H-K-O-P, P-x polyhedra, Structural transitions

• As-H-K-Na-O-P
• H-K-N-O-P
• temperature for structural transition
• pressure derivative of transition temperature
• pressure for structural transition
• orthophosphate
• disordered
• alkali
• chalcogen
• pnictogen
• tetragonal
• orthorhombic
• monoclinic