Preparation and dielectric properties of dense barium titanate nanoparticle accumulations by electrophoresis deposition method

Satoshi Wada, Shuhei Kondo, Tatsuya Kita, Risa Nakata, Ichiro Fujii, Koichi Nakashima, Naoya Miyajima, Thoru S. Suzuki, Tetsuro Uchikoshi, Yoshio Sakka, Takahiro Takei, Nobuhiro Kumada

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Dense barium titanate (BaTiO3, BT) nanoparticle accumulations were prepared by an electrophoresis deposition (EPD) method using three kinds of BT nanoparticles with different particles sizes and tetragonality. First, the BT particles were dispersed into ethanol using ball-milling technique, and an optimum milling condition was investigated. As the results, it was confirmed that ball-milling led to a formation of mixture between single-dispersed nanoparticles and aggregated particles. Thus, the aggregated particles in the slurry were removed by a centrifuge in order to obtain narrow the size distribution. Using well-dispersed slurry, BT nanoparticle accumulations were deposited on paradigm electrode by the EPD method. Despite various BT nanoparticles, the dense BT nanoparticle accumulations were obtained at relative densities of around 60 %. After gold electrode deposition on the both surfaces of the accumulations by spattering method, dielectric properties were measured at 20 °C, the highest dielectric constants of around 160 was measured at 10 MHz.

本文言語English
ホスト出版物のタイトルElectroceramics in Japan XIV
出版社Trans Tech Publications Ltd
ページ35-38
ページ数4
ISBN(印刷版)9783037851821
DOI
出版ステータスPublished - 2011
外部発表はい

出版物シリーズ

名前Key Engineering Materials
485
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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