Alkali, Non-disordered, Transitional, Real part of permittivity

• Na-Nb-O
• Li-O-Ta
• Fe-Li-O
• Br-Co-Rb
• K-O-Ta
• transitional
• non-disordered
• alkali
• chalcogen
• ternary
• orthorhombic
• monoclinic
• trigonal
• cubic
• hexagonal