Alkaline, Bovtun

• La-Nb-O-Sr-Ti
• Ba-Bi-Nb-O
• Bi-Nb-O-Sr
• Ba-Bi-O-Sr-Ta
• Mg-O-Pb-Ta
• electronic and electrical properties
• permittivity (dielectric constant)
• optical properties
• phonons
• imaginary part of permittivity
• transitional
• alkaline
• chalcogen
• nonmetal
• ferroelectric
• tetragonal
• orthorhombic
• cubic
• trigonal
• monoclinic