Electrophoretic Deposition of Ferroelectric Barium Titanate Thick Films and Their Dielectric Properties
Electrophoretic Deposition of Ferroelectric Barium Titanate Thick Films and Their Dielectric Properties
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铁电钛酸钡厚膜的电泳沉积及其介电性能
DOI：
10.1111/j.1151-2916.1993.tb03720.x
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发表时间：
1993
影响因子：
3.9
通讯作者：
Yasuhisa Takuma
中科院分区：
文献类型：
--
作者：
Masaharu Nagai;K. Yamashita;T. Umegaki;Yasuhisa Takuma
采用一种独特的电泳沉积技术，以乙醇-乙酰丙酮混合液为分散介质，制备了10-70 μm厚的钛酸钡薄膜。BaTiO 3薄膜的电容在200°C的温度下测量为25-70 nF，介电常数为4000-12000，介电损耗（tan δ）为0.13-0.51。在这样沉积的烧结膜中，观察到（111）取向，并且发现取向度随着膜厚度的减小而增加。在如此取向的薄膜中，居里点被证实接近120°C
Barium titanate thick films 10-70 μm thick were obtained using a unique electrophoretic deposition technique, which utilizes a mixed ethanol-acetylacetone suspension as the dispersive medium. The capacitance of the BaTiO 3 films was measured as 25-70 nF, at temperatures of up to 200°C, giving a dielectric constant of 4000-12000 and dielectric loss (tan δ) of 0.13-0.51. In the sintered films thus deposited, (111) orientation was observed, and the degree of orientation was found to increase with decrease of the thickness of the films. In so-oriented films, the Curie point was confirmed to be near 120°C