2013 Fiscal Year Final Research Report
Search for a new phase of multiferroic ferroelectric RFe2O4 aimed at practical applications
| Project/Area Number |
23350071
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
YOSHII Kenji 独立行政法人日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 研究主幹 (90354985)
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| Co-Investigator(Kenkyū-buntansha) |
HIROYUKI Saitoh 日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 研究副主幹 (20373243)
NAOSHI Ikeda 岡山大学, 理学部, 教授 (00222894)
DAIJU Matsumura 日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 研究副主幹 (30425566)
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| Co-Investigator(Renkei-kenkyūsha) |
YUJI Muraoka 岡山大学, 自然科学研究科, 准教授 (10323635)
SHIGEO Mori 大阪府立大学, 工学系研究, 教授 (20251613)
YASUHIRO Yoneda 日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 研究主幹 (30343924)
YASUO Nishihata 日本原子力研究開発機構, 原子力科学研究部門・量子ビーム応用研究センター, 研究主幹 (90218181)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | マルチフェロイック / 室温動作素子 / 電子強誘電体 / 磁気転移温度 / 交換バイアス |
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| Research Abstract |
In search of multiferroiciity at room temperature, we have conducted the research work on electronic ferroelectric RFe2O4 (R: rare earths). The magnetic transition temperature was not drastically changed by a few kinds of attempts, such as R- and Fe-sites substitutions. However, it was found that the related system R2Fe3O7 shows a magnetic transition at 270 K, which is 20 K higher than that of RFe2O4. As R2Fe3O7 was reported to be ferroelectric at room temperature, this system is multiferroic below 270 K. This result offers a possible increase in transition temperature up to room temperature. In addition, we have revealed several new phenomena of RFe2O4, such as exchange bias and enhancement anisotropy induced by electrical current, which may be used to fabricate new multiferroic devices.
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Research Products
(39 results)
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[Journal Article] Exchange bias in multiferroic RFe2O4 (R= Y, Er, Tm, Yb, Lu, and In)2012
Author(s)
K. Yoshii, N. Ikeda, Y. Nishihata, D. Maeda, R. Fukuyama, T. Nagata, J. Kano, T. Kambe, Y. Horibe and S. Mori
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Journal Title
J. Phys. Soc. Jpn
Volume: 81
Pages: 033704(1-4)
DOI
Peer Reviewed
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[Journal Article] Probing the Ba 5d states in BaTiO3 and BaSO4 : A resonant x-ray emission study at the Ba-L3 edge2012
Author(s)
K. Yoshii, I. Jarrige, C. Suzuki, D. Matsumura, Y. Nishihata, Y. Yoneda, T. Fukuda, K. Tamura, Y. Ito, T. Mukoyama, T. Tochio, H. Shinotsuka, S. Fukushima
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Journal Title
J. Phys. Chem. Solids
Volume: 73
Pages: 1106-1110
DOI
Peer Reviewed
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[Presentation] X線発光分光法を用いた吸収端評価2011
Author(s)
伊藤嘉昭, 重岡伸之, 大橋浩史, 杤尾達紀, 福島整, 寺澤倫孝, 藤井達生, 蔭山博之, 吉井賢資, 米田安宏, 二澤宏司
Organizer
日本物理学会2011年秋季大会
Place of Presentation
富山
Year and Date
2011-09-23
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