Multiferroism at Room Temperature in BiFeO3/BiCrO3(111) Artificial Superlattices

被引:33
作者
Ichikawa, Noriya [1 ,2 ,7 ]
Arai, Masaya [2 ]
Imai, Yusuke [2 ]
Hagiwara, Kei [2 ]
Sakama, Hiroshi [2 ,7 ]
Azuma, Masaki [1 ]
Shimakawa, Yuichi [1 ]
Takano, Mikio [3 ]
Kotaka, Yasutoshi [4 ]
Yonetani, Masashi [5 ]
Fujisawa, Hironori [5 ]
Shimizu, Masaru [5 ]
Ishikawa, Kenya [6 ]
Cho, Yasuo [6 ]
机构
[1] Kyoto Univ, Inst Chem Res, Kyoto 6110001, Japan
[2] Sophia Univ, Dept Phys, Chiyoda Ku, Tokyo 1028554, Japan
[3] Kyoto Univ, Inst Integrated Cell Mat Sci, Res Inst Prod Dev, Sakyo Ku, Kyoto 6060805, Japan
[4] Fujitsu Labs Ltd, Kanagawa 2430197, Japan
[5] Univ Hyogo, Grad Sch Engn, Himeji, Hyogo 6712201, Japan
[6] Tohoku Univ, Elect Commun Res Inst, Aoba Ku, Sendai, Miyagi 9808577, Japan
[7] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
关键词
Strontium titanates - Iron compounds - Titanium compounds - Transition metals - Chromium compounds - Ferromagnetic materials - Metal ions - Ferromagnetism - Magnetic moments;
D O I
10.1143/APEX.1.101302
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report the fabrication of BiFeo(3)/BiCrO3(111) artificial superlattices with 1/1 stacking in a layer-by-layer growth mode on atomically flat SrTio(3)(111) surfaces. While BiFeo(3) and BiCro(3) are antiferromagnets having Fe-O-Fe and Cr-O-Cr bonds, these superlattices contain Fe-O-Cr bonds, in which ferromagnetic interaction is expected. Magnetization measurements at 300 K revealed that the magnetic moment per transition metal ion was 1.7 mu(B), suggesting ferromagnetic spin order. Ferroelectric behavior at room temperature was confirmed by an analysis using a scanning non-linear dielectric microscope. (c) 2008 The Japan Society of Applied Physics
引用
收藏
页码:1013021 / 1013023
页数:3
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