BaTiO3薄膜におけるCoFe2O4ナノピラーの形成に伴い生じる界面応力

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2017/02/01

タイトル(英語): Interfacial Stress Occured with Formation of CoFe2O4 Nanopillars in BaTiO3 Films

著者名: 曽田　昇吾（名古屋大学大学院工学研究科エネルギー理工学専攻），田尻　修也（名古屋大学大学院工学研究科エネルギー理工学専攻），吉田　隆（名古屋大学大学院工学研究科エネルギー理工学専攻），一野　祐亮（名古屋大学大学院工学研究科エネルギー理工学専攻），一瀬　中（（一財）電力中央研究所）

著者名(英語): Shogo Sota (Dept. of Energy Engineering and Science, Nagoya University), Shuya Tajiri (Dept. of Energy Engineering and Science, Nagoya University), Yutaka Yoshida (Dept. of Energy Engineering and Science, Nagoya University), Yusuke Ichino (Dept. of Energy Engineering and Science, Nagoya University), Ataru Ichinose (Central Research Institute of Electric Power Industry)

キーワード: BaTiO3，CoFe2O4，マルチフェロイクス，薄膜，界面応力　　BaTiO3，CoFe2O4，multiferroics，thin film，interfacial stress

要約(英語): CoFe2O4(CFO)-doped BaTiO3(BTO) film is one of composite multiferroic materials. In the materials, magnetoelectric effect occurs from the stress of the interface between ferroelectric and ferromagnetic. Therefore, Interfacial stress between BTO and CFO is important for magnetoelectric effect. However, it has not been clearly yet. It is considered that it can reveal the effect on BTO of CFO to comparing different CFO content samples. Then, we fabricated CFO-doped BTO films with various content and measured lattice constant and temperature dependence of dielectric constant for films. As a result, out-of-plane lattice constant of BTO was reduced with the increase of the CFO content. In addition, phase transition temperature of BTO was increased with the increase of the CFO content. Therefore, it is considered that CFO adds some in-plane tensile stress on BTO.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.137 No.2 （2017） 特集：2015 Korea-Japan Joint Symposium on Electrical Discharge and High Voltage Engineering並びに放電研究の最新動向

本誌掲載ページ: 135-140 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/137/2/137_135/_article/-char/ja/