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摘要
Ba0.9175Ca0.08Nd0.0025(Zr0.18Ti0.8175-xYxMn0.0025)O-3(x = 0, 0.5%, 0.75%, 1.0%, 1.5% and 2.0% mol) ceramics are synthesized by the conventional solid state processing. X-ray diffraction patterns show that all the compositions have an only tetragonal BaTiO3 structure at room temperature. The dielectric constant of samples decrease, dielectric peak temperature (T-m) shifts toward lower temperature and the frequency dispersion becomes strong and the more pronounced DPT (Diffuse Phase Transitions) behavior as the content of Y increases. The degree of deviation from the Curie-Weiss law is found to increase and the value of the parameter gamma is from 1.82 to 1.96 with the increasing amount of Y3+.
- 出版日期2012
- 单位西华大学
