Creation of Spin-Nanostructure with Extreme High Magnetic Moment

• Project/Area Number: 21226007
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Electronic materials/Electric materials
• Research Institution: Tohoku University
• Principal Investigator: TAKAHASHI Migaku 東北大学, 未来科学技術共同研究センター, 教授 (70108471)
• Co-Investigator(Kenkyū-buntansha): TSUNODA Masakiyo 東北大学, 大学院工学研究科, 准教授 (80250702) ; OGAWA Tomoyuki 東北大学, 大学院工学研究科, 助教 (50372305)
• Project Period (FY): 2009-05-11 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥204,620,000 (Direct Cost: ¥157,400,000、Indirect Cost: ¥47,220,000); Fiscal Year 2013: ¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000); Fiscal Year 2012: ¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000); Fiscal Year 2011: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000); Fiscal Year 2010: ¥43,290,000 (Direct Cost: ¥33,300,000、Indirect Cost: ¥9,990,000); Fiscal Year 2009: ¥91,650,000 (Direct Cost: ¥70,500,000、Indirect Cost: ¥21,150,000)
• Keywords: 電気・電子材料 / 窒化鉄 / 飽和磁化 / ナノ粒子 / 薄膜

Research Abstract

In order to obtain a new magnetic material with high saturation magnetization, establishment of synthesis method of alpha"-Fe16N2 nanoparticles and fabrication method of Fe-based nanoparticle assembly. By synthesizing new precursors and optimizing process conditions, single-phase of alpha"-Fe16N2 nanoparticles was successfully synthesized for the first time, whose saturation magnetization was 234emu/g. By applying Fe nanoparticles with 10nm in diameter, newly developed coagulation method of nanoparticles could control a volume fraction from 0.5% to 40% of the Fe nanoparticle assembly.

Assessment Rating

Verification Result (Rating)

A-

Research Products

• [Journal Article] Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite (2014)
  • Author(s): H. Kura
  • Journal Title: Scripta Materialia Volume: 76 Pages: 65-68
  • DOI: 10.1016/j.scriptamat.2013.12.018
  • Peer Reviewed
• [Journal Article] Quantitative understanding of thermal stability of α"-Fe_<16>N_2 (2013)
  • Author(s): S. Yamamoto, R. Gallage, Y. Ogata, Y. Kusano, N. Kobayashi, T. Ogawa, N. Hayashi, K. Kohara, M. Takahashi, and M. Takano
  • Journal Title: Chem. Commun Volume: 49(70) Issue: 70 Pages: 7708-7710
  • DOI: 10.1039/c3cc43590c
  • Peer Reviewed
• [Journal Article] Challenge to the Synthesis of α''-Fe_<16>N_2 Compound Nanoparticle with High Saturation Magnetization for Rare Earth Free New Permanent Magnetic Material (2013)
  • Author(s): T. Ogawa, Y. Ogata, R. Gallage, N. Kobayashi, N. Hayashi, Y. Kusano, S. Yamamoto, K. Kohara, M. Doi, M. Takano and M. Takahashi
  • Journal Title: Applied Physics Express Volume: 6(7) Issue: 7 Pages: 73007-73007
  • DOI: 10.7567/apex.6.073007
  • NAID: 10031187898
  • Peer Reviewed
• [Journal Article] Size effect of Fe nanoparticles on the high frequency dynamics for highly dense self-organized assemblies (2012)
  • Author(s): H. Kura, T. Ogawa, R. Tate, K. Hata and M. Takahashi
  • Journal Title: Journal of Applied Physics Volume: 111, No.7 Issue: 7
  • DOI: 10.1063/1.3676224
  • Peer Reviewed
• [Journal Article] Synthesis of Fe-Co nanoparticles with high saturation magnetization by low-temperature post-annealing (2012)
  • Author(s): T. Ogawa
  • Journal Title: Journal of Applied Physics Volume: 111 Issue: 7
  • DOI: 10.1063/1.3679027
  • Peer Reviewed
• [Journal Article] Fe(CO)5熱分解法を用いた単分散Feナノ粒子の広域粒径制御 (2012)
  • Author(s): 小川智之
  • Journal Title: 日本磁気学会誌 Volume: 36 Pages: 202-208
  • NAID: 130002112342
  • Peer Reviewed
• [Journal Article] 低吸着力界面活性剤を添加したFe ナノ粒子における飽和磁化の改善 (2012)
  • Author(s): M. Kamata
  • Journal Title: 日本磁気学会誌 Volume: 36 Pages: 309-312
  • Peer Reviewed
• [Journal Article] Direct synthesis of single crystalline α-Fe nanoparticles with high saturation magnetization by mixed surfactant (2012)
  • Author(s): M. Kamata
  • Journal Title: IEEE Trans. Magn. Volume: 48 Issue: 11 Pages: 3944-3946
  • DOI: 10.1109/tmag.2012.2197737
  • Peer Reviewed
• [Journal Article] Spin-glasslike behavior of magnetic ordered state originating from strong interparticle magnetostatic interaction in α-Fe nanoparticle agglomerate (2011)
  • Author(s): K. Hiroi, H. Kura, T. Ogawa, M. Takahashi and T. Sato
  • Journal Title: Appl. Phys. Lett Volume: 98 Issue: 25
  • DOI: 10.1063/1.3602313
  • Peer Reviewed
• [Journal Article] Effect of nucleation and growth dynamics on saturation magnetization of chemically synthesized Fe nanoparticles (2011)
  • Author(s): T.Ogawa
  • Journal Title: Journal of Magnetics Volume: VOL16 Issue: 3 Pages: 308-311
  • DOI: 10.4283/jmag.2011.16.3.308
  • Peer Reviewed
• [Journal Article] Effect of Nitrogen-Hydrogen Mixed Plasma on Nitridation Process of Iron Nanoparticles (2011)
  • Author(s): T.Maki
  • Journal Title: Thin Solid Films Volume: 519 Issue: 23 Pages: 8351-8364
  • DOI: 10.1016/j.tsf.2011.03.067
  • Peer Reviewed
• [Journal Article] Effect of Hydrogen Plasma Treatment on Reduction Process of Iron Oxide Nanoparticle (2011)
  • Author(s): T.Maki
  • Journal Title: Journal of Physics : Conference series Volume: 266
  • Peer Reviewed
• [Journal Article] Collective magnetic behavior of α-Fe nanoparticles with systematically controlled volume fraction (2011)
  • Author(s): T.Ogawa
  • Journal Title: Scripta Materialia Volume: 64 Pages: 1067-1070
  • Peer Reviewed
• [Journal Article] Synthesis of Monodisperse Iron Nanoparticles with High Saturation Magnetization using Fe(CO)_x-Oleylamine Reacted Precursor (2010)
  • Author(s): H. Kura, M. Takahashi, and T. Ogawa
  • Journal Title: Journal of Physical Chemistry C Volume: 114 Issue: 13 Pages: 5835-5838
  • DOI: 10.1021/jp911161g
  • Peer Reviewed
• [Journal Article] Size control and characterization of wustite (core)/spinel (shell) nanocubes obtained by decomposition of iron oleate complex (2010)
  • Author(s): H. T. Hai, H. T. Yang, H. Kura, D. Hasegawa, Y. Ogata, M. Takahashi and T. Ogawa
  • Journal Title: Journal of Colloid and Interface Science Volume: 346 Issue: 1 Pages: 37-42
  • DOI: 10.1016/j.jcis.2010.02.025
  • Peer Reviewed
• [Journal Article] Phase transformation of FeO/Fe_3O_4 core/shell nanocubes and facile synthesis of Fe_3O_4 nanocubes (2010)
  • Author(s): H.T. Hai
  • Journal Title: Journal of Applied Physics (未定,印刷中)
  • Peer Reviewed
• [Journal Article] Wustite(core)/spinel(shell) nanoparticles : a general product of the decomposition of iron-oleate complex (2010)
  • Author(s): H.T. Hai
  • Journal Title: Journal of Colloid and Interface Science (未定,印刷中)
  • Peer Reviewed
• [Journal Article] 粒子成長速度がFeナノ粒子の飽和磁化に及ぼす影響 (2009)
  • Author(s): 小川智之
  • Journal Title: 日本磁気学会誌 33 Pages: 247-251
  • NAID: 10025969807
  • Peer Reviewed
• [Journal Article] (2009)
  • Author(s): 高橋研
  • Journal Title: 自己組織化ハンドブック(株式会社エヌ・ティー・エス) Pages: 607-610
• [Presentation] α', α" - Fe_<16>N_2 Interstitial Compound - Single phase formation and magnetism of nano particles - (2013)
  • Author(s): M. Takahashi and T. Ogawa
  • Organizer: International Conference on Nanoscale Magnetism (ICNM-2013)
  • Place of Presentation: Istanbul, Turkey
  • Invited
• [Presentation] Synthesis and magnetic characterization of α”-Fe16N2 Interstitial Compound- New Candidate for Permanent Magnetic Material with Rare Earth Element Free (2013)
  • Author(s): M. Takahashi
  • Organizer: Conference of Korean Institute of Metals and Materials (KIM 2013)
  • Place of Presentation: Jeju, Korea
  • Invited
• [Presentation] Single phase formation of alpha”-Fe16N2 nanoparticle powder and its magnetism (2013)
  • Author(s): T. Ogawa
  • Organizer: The 3rd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA2013)
  • Place of Presentation: Taichung, Taiwan
  • Invited
• [Presentation] alpha’, alpha” - Fe16N2 Interstitial Compound - Single phase formation and magnetism of nano particles (2013)
  • Author(s): M. Takahashi
  • Organizer: International Conference on Nanoscale Magnetism (ICNM-2013)
  • Place of Presentation: Istanbul, Turkey
  • Invited
• [Presentation] alpha"-Fe16N2ナノ粒子の単相合成と磁気特性 (2013)
  • Author(s): 小川智之
  • Organizer: 電気学会 ナノスケール磁性体の新物性と新機能性の応用調査専門委員会 第2回委員会
  • Place of Presentation: 東京
  • Invited
• [Presentation] Synthesis and magnetic characterization of α"-Fe_<16>N_2 Interstitial Compound - New Candidate for Permanent Magnetic Material with Rare Earth Element Free - (2012)
  • Author(s): M. Takahashi and T. Ogawa
  • Organizer: IEEE International Magnetics Conference (INTERMAG 2012)
  • Place of Presentation: Vancouver, Canada
  • Invited
• [Presentation] Synthesis and magnetic characterization of alpha”-Fe16N2 Interstitial Compound - New Candidate for Permanent Magnetic Material with Rare Earth Element Free - (2012)
  • Author(s): M. Takahashi
  • Organizer: IEEE International Magnetics Conference (INTERMAG 2012)
  • Place of Presentation: Vancouver, Canada
  • Invited
• [Presentation] Iron-Nitride Compound as a New Candidate for Futured Permanent Magnetic Material, - From Thin Film to Bulk - (2012)
  • Author(s): T. Ogawa
  • Organizer: The 13th Japanese-American Frontiers of Science (JAFoS) Symposium
  • Place of Presentation: Irvine, USA
  • Invited
• [Presentation] Synthesis and magnetic characterization of alpha”-Fe16N2 Interstitial Compound - New Candidate for Permanent Magnetic Material with Rare Earth Element Free -; (2012)
  • Author(s): M. Takahashi
  • Organizer: Annual Conference of Korean Magnetics Society (KMS2012)
  • Place of Presentation: Korea
  • Invited
• [Presentation] Effect of directionally oriented magnetic dipole field on static and dynamic magnetic properties of Fe nanoparticle needle-shaped assembly (2012)
  • Author(s): H. Kura
  • Organizer: International Conference of the Asian Union of Magnetics Societies (ICAUMS2012)
  • Place of Presentation: Nara, Japan
• [Presentation] Effect of Pt Addition on Structure and Magnetic Properties of alpha’-Fe16N2 Thin Film (2012)
  • Author(s): T. Ogawa
  • Organizer: International Conference of the Asian Union of Magnetics Societies (ICAUMS2012)
  • Place of Presentation: Nara, Japan
• [Presentation] Fe_<16>N_2 Interstitial Compound-New Candidate for Permanent Magnetic Material with Rare Earth Element Free- (2011)
  • Author(s): M.Takahashi
  • Organizer: 56^<th> Annual Conference on Magnetism and Magnetic Material (MMM)
  • Place of Presentation: Scottsdale, USA(招待講演)
  • Year and Date: 2011-10-30
• [Presentation] Fe_<16>N_2 Interstitial Compound - New Candidate for Permanent Magnetic Material with Rare Earth Element Free - (2011)
  • Author(s): M. Takahashi and T. Ogawa
  • Organizer: 56^<th> Annual Conference on Magnetism and Magnetic Material (MMM)
  • Place of Presentation: Scottsdale, USA
  • Invited
• [Presentation] Development of High Performance Magnetic Materials with Rare Earth Element (REE) Less/Free (2010)
  • Author(s): T.Ogawa
  • Organizer: U.S.-Japan Roundtable Discussion on Rare Earth Elements Research and Development for Clean Energy Technologies
  • Place of Presentation: リバモア(アメリカ合衆国)
  • Year and Date: 2010-11-19
• [Presentation] Development of High Performance Magnetic Materials with Rare Earth Element (REE) Less/Free (2010)
  • Author(s): T. Ogawa
  • Organizer: U.S. - Japan Roundtable Discussion on Rare Earth Elements Research and Development for Clean Energy Technologies
  • Place of Presentation: U.S. Department of Energy, Lawrence Livermore National Laboratory
  • Invited
• [Presentation] Fast frequency magnetic response of Fe-based magnetic nanoparticle assembly for high frequency devices (2009)
  • Author(s): M.Takahashi
  • Organizer: India-Japan Workshop On Biomolecular Electronics & Organic Nanotechnology for Environment Preservation(IJBEONEP2009)
  • Place of Presentation: ニューデリー(インド)
  • Year and Date: 2009-12-17
• [Presentation] Fast frequency magnetic response of Fe-based magnetic nanoparticle assembly for high frequency devices (2009)
  • Author(s): M. Takahashi and T. Ogawa
  • Organizer: India-Japan Workshop On Biomolecular Electronics & Organic Nanotechnology for Environment Preservation (IJBEONEP2009)
  • Place of Presentation: New Delhi, India
  • Invited
• [Book] 薄膜工学[第2版] (2011)
  • Author(s): 高橋研, 他多数
  • Publisher: 丸善出版
• [Book] 「テラビット対応自己組織化ナノ粒子配列型磁気記録媒体」、自己組織化ハンドブック (2009)
  • Author(s): 高橋研、小川智之
  • Publisher: ㈱エヌ・ティー・エス