Dielectric depression and dispersion in electrophoretically fabricated BaTiO3 ceramic films
Dielectric depression and dispersion in electrophoretically fabricated BaTiO3 ceramic films
复制标题
电泳制备 BaTiO3 陶瓷薄膜中的介电抑制和色散
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Okura
中科院分区：
文献类型：
--
作者：
K. Yamashita;M. Matsuda;Yasushi Inda;T. Umegaki;M. Ito;T. Okura
采用电泳沉积法制备的Ba-TiO 3陶瓷薄膜在烧结过程中出现了介电损耗和色散现象。介电常数在居里点附近降低到6800-4600。介电色散发生在高于T C。这些介电性能归因于在烧结期间形成的表面层。XRD分析表明，表面层为类六方BaTiO 3相。在本工作中采用的乙酰丙酮和乙醇的混合溶剂可能是负责的表面层的形成。
Dielectric depression and dispersion were observed in Ba-TiO 3 ceramic films fabricated by electrophoretic deposition followed by sintering. The dielectric constants were depressed down to 6800-4600 around the Curie point (T C ). The dielectric dispersion occurred above T C . These dielectric properties are attributable to a surface layer formed during sintering. XRD analysis indicated that the surface layer was a hexagonal-like BaTiO 3 phase. A mixed solvent of acetylacetone and alcohol employed in the present work may have been responsible for the formation of the surface layer.