Chalcogen, Pnictogen, P-W, Tetragonal

• K-Mg-O-P-W
• Co-H-K-O-P-W
• H-K-Ni-O-P-W
• K-Ni-O-P-W
• O-P-V-W
• thermal and thermodynamic properties
• structural properties
• electronic and electrical properties
• phase transitions
• heat capacity at constant pressure
• transitional
• chalcogen
• pnictogen
• orthophosphate
• oxide