FENG Mei, LI Yuanliang, WANG Huanhuan, GU Jiani, WANG Jinghua
(Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, North China University of Science and Technology, Tangshan 063009, Hebei, China)

Abstract: Using BaCO₃, ZrO₂, TiO₂, etc. as raw materials and Fe₂O₃ as a dopant, BaZr₀.₀₅Ti₀.₉₅O₃ dielectric ceramics were prepared. The effects of Fe₂O₃ doping on the dielectric properties and microscopic morphology were investigated. The results show that Fe₂O₃ doping has no effect on the main crystal phase of the sample while evidently changes its dielectric properties; the optimized dielectric constant is 2202 and the optimized dissipation factor is 0.013 for the sample doped with 0.50 mol% Fe³⁺, making it a superior candidate material for applications.The curie temperature of the sample moves to a lower temperature with the increasing of Fe₂O₃.

Key words: BZT; solid reaction process; doping; dielectric properties