2011 Fiscal Year Final Research Report
Preparation of Ferromagnetic and Ferroelectric Thin Films by Pulsed Laser Deposition and Their Characterization
| Project/Area Number |
21360150
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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 |
Electronic materials/Electric materials
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| Research Institution | Osaka University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KANASHIMA Takeshi 大阪大学, 基礎工学研究科, 准教授 (30283732)
SOHGAWA Masayuki 大阪大学, 基礎工学研究科, 助教 (70403128)
RICINSCHI Dan 東京工業大学, 総合理工学研究科, 特任准教授 (60403127)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 強誘電体 / 強磁性体 / マルチフェロイック / 薄膜 / レーザアブレーション / 磁場 |
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| Research Abstract |
Multiferroic BiFeO_3 has giant dielectric hysteresis at room temperature but very small magnetic hysteresis and so little magneto-electric effect. Then, BiFeO_3 and BiFe_<1-x> M_xO_3 thin films are prepared by pulsed laser deposition under magnetic field and/ or annealed under magnetic field. So, magnetic hysteresis of the prepare thin films could be increased by antiparallel arrangement of different spins of adjacent magnetic ions, defect generation and/ or microscopic texture variation, keeping large ferroelectricity and moreover magneto-electric effect is expected to be enhance.
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