Germanium modified BaTiO₃ as a promising electroceramics

ABSTRACT

The polycrystalline sample of BaTi_0.95Ge_0.05O₃ was prepared by solid-phase reaction using a conventional method. The morphology of investigated sample was characterised by scanning electron microscopy (SEM). The results allowed to determining the stoichiometry of the material and evaluate their microstructure. High quality samples were investigated, the grains are well shaped without of a glassy phase. The dielectric properties of the BaTi_0.95Ge_0.05O₃ ceramics were determined. The results were compared with these ones obtained for pure BaTiO₃. The obtained data indicated that the substitution of Ge⁺⁴ ions had an influence on the values of the real (ϵ′) and imaginary (ϵ″) parts of electric permittivity.

KEYWORDS:

• Barium titanate
• germanium
• ceramic materials
• phase transition