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

来源：

APPLIED PHYSICS EXPRESS | 2008年 / 1卷 / 10期

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

页码：1013021 / 1013023

页数：3

共 20 条

[1] Near-complete spin polarization in atomically-smooth chromium-dioxide epitaxial films prepared using a CVD liquid precursor [J].