Chalcogen, Nonmetal, Oxide, Monoclinic, Real part of permittivity

• Mg-Nb-O-Pb-Ti
• Co-La-Mn-O
• K-Na-Nb-O
• Bi-O-Pb-Sc-Ti
• Bi-Nb-O-Zn
• chalcogen
• oxide
• nonmetal
• transitional
• disordered