Bykanova

• H-K-Ni-O-P
• H-Ni-O-P
• K-Ni-O-P
• H-Ni-O-P-Rb
• H-N-Ni-O-P
• structural properties
• phase diagram
• phase transitions
• chalcogen
• pnictogen
• transitional
• alkali
• quinary
• monoclinic
• trigonal