Alkali, Chalcogen, Non-disordered, Nonmetal, Real part of permittivity

• As-H-K-O
• H-K-O-P
• Li-O-Ta
• Na-Nb-O
• H-Li-N-O-S
• non-disordered
• nonmetal
• alkali
• chalcogen
• disordered
• monoclinic
• orthorhombic
• tetragonal
• trigonal
• cubic