Review on Dielectric Properties of Rare Earth Doped Barium Titanate.

Rare earth doped Barium Titanate (BaTiO₃) were studied due to high permittivity, excellent electrical properties and have wide usage in various applications. This paper reviewed on the electrical properties of RE doped BaTiO₃ (RE: Lanthanum (La), Erbium (Er), Samarium (Sm), Neodymium (Nd), Cerium (Ce)), processing method, phase transition occurred and solid solution range for complete study. Most of the RE doped BaTiO₃ downshifted the Curie temperature (T_C). Transition temperature also known as Curie temperature, T_C where the ceramics had a transition from ferroelectric to a paraelectric phase. In this review, the dielectric constant of La-doped BaTiO₃, Er-doped BaTiO₃, Sm-doped BaTiO₃, Nd-doped BaTiO₃ and Ce-doped BaTiO₃ had been proved to increase and the transition temperature or also known as T_C also lowered down to room temperature as for all the RE doped BaTiO₃ except for Er-doped BaTiO₃. [ABSTRACT FROM AUTHOR]