Grebenev

• H-K-O-S
• Cs-H-O-P-S
• Ca-Fe-O-P
• H-K-N-O-S
• H-K-O-P
• structural properties
• electronic and electrical properties
• phase transitions
• conductivity or resistivity
• permittivity (dielectric constant)
• chalcogen
• alkali
• disordered
• pnictogen
• quaternary
• monoclinic
• trigonal
• tetragonal
• cubic
• orthorhombic