Artificial control of surface and interface structures in magnetic nanoparticles under hydrostatic pressure

• Project/Area Number: 19750118
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Functional materials chemistry
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: MITO Masaki Kyushu Institute of Technology, 工学研究院, 准教授 (60315108)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,700,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥2,400,000 (Direct Cost: ¥2,400,000)
• Keywords: 磁性ナノ粒子 / 静水圧力効果 / 表面効果 / 界面効果 / 磁気異方性 / 高圧力実験 / 界面構造 / 表面構造 / 超常磁性

Research Abstract

強磁性型・フェリ磁性型・反強磁性型ナノ粒子の静水圧力下における磁性と構造を系統的に調べ、磁性ナノ粒子の磁気特性を左右する要因を実験的に整理した。研究過程で、磁気異方性が静水圧力によって影響を受け、その大きさが変化することを発見したは過去に例のない成果と言える。特にマグへマイトナノ粒子では、詳細な構造解析実験による知見に基づき、磁気挙動の変化を解析することで、ナノ粒子のコア部分とシェル部分の磁気異方性を評価することができ、磁気異方性に関する新たな研究手法を提案できた。

Research Products

• [Journal Article] Surface and Core magnetic anisotropy in maghemite nanoparticles determined by pressure experiments (2009)
  • Author(s): K. Komorida, M. Mito, H. Deguchi, S. Takagi, A. Millan, N. J. O. Silva, F. Palacio
  • Journal Title: Applied Physics Letters Vol.94 Pages: 202503-202503
  • Peer Reviewed
• [Journal Article] Effects of Pressure on Magnetic Properties of Ferrihydrite Antiferromagnetic Nanoparticles (2009)
  • Author(s): Y. Komorida, N. J. O. Silva, M. Mito, H. Deguchi, S. Takagi, F. Palacio and V. S. Amaral
  • Journal Title: J. Phys : Conference Series Vol.150 Pages: 42098-42098
  • Peer Reviewed
• [Journal Article] Magnetic Properties of BaTiO_3 nanoparticles in SBA-15 mesoporous silica (2009)
  • Author(s): T. Tajiri, M. Harazono, T. Kitamura, H. Deguchi, S.Kohiki, M. Mito, A. Kohno, and S. Takagi
  • Journal Title: J. Phys : Conference Series 150 Pages: 42198-42198
  • Peer Reviewed
• [Journal Article] Effects of Pressure on Magnetic Properties of Ferrihydrite Antiferromagnetic Nanoparticles (2009)
  • Author(s): Y. Komorida, N. J. O. Silva, M. Mito, H. Deguchi, S. Takagi, F. Palacio, and V. S. Amaral
  • Journal Title: J. Phys : Conference Series 150 Pages: 42098-42098
  • Peer Reviewed
• [Journal Article] Transport Properties of a Josephson-Coupled Network in a Superconductive Ceramic of YBa_2CuO_8 (2009)
  • Author(s): H. Deguchi, D. Nawa, Y. Hashimot o, M. Mito, S. Takagi, M. Hagiwara and K. Koyama
  • Journal Title: J. Phys : Conference Series 150 Pages: 52043-52043
  • Peer Reviewed
• [Journal Article] AC susceptibility measurements on ceramic Yba2CuO7-y superconductor in the GPa region (2009)
  • Author(s): S. Tominaga, Y. Komorida, M. Mito, H. Deguchi, S. Takagi, K. Koyama and M. Hamada
  • Journal Title: J. Phys : Conference Series 150 Pages: 52271-52271
  • Peer Reviewed
• [Journal Article] Giant non-linear magnetic response in a molecule-based magnet (2009)
  • Author(s): M. Mito, K.Iriguchi, H. Deuguchi, J. Kishine, K. Kikuchi, H. Osumi, Y. Yoshida, K. Inoue
  • Journal Title: Phys. Rev. B 79 Pages: 12406-12406
  • Peer Reviewed
• [Journal Article] Response of superconductivity and crystal structure of LiFeAs to hydrostatic pressure (2009)
  • Author(s): M. Mito, M. J. Pitcher, W. Crichton, G Garbarino, P. J. Baker, S. J. Blundell, P. Adamson, D. R. Parker and S. J. Clarke
  • Journal Title: J. Am. Chem. Soc 131 Pages: 2986-2992
  • Peer Reviewed
• [Journal Article] Surface and Core magnetic anisotropy in maghemite nanoparticles determined by pressure experiments (2009)
  • Author(s): K. Komorida, M. Mito, H. Deguchi, S. Takagi, A. MilMil, N. J. O. Silva, F. Palacio
  • Journal Title: Appl. Phys. Lett (印刷中)
  • Peer Reviewed
• [Journal Article] Synthesis and magnetic properties of Fe-doped (In_<1-x>Ho_<x>)_2O_3 solid solution (2008)
  • Author(s): K. Okada, S. Kohiki, F. Tsutsui, H. Shimooka, M. Mitome, Y. Bando, M. Mito, H. Deguchi and T. Shishido
  • Journal Title: Scripta Materialia 59 Pages: 444-447
  • Peer Reviewed
• [Journal Article] Phase Separation in La_<1-x>SrxMnO_<3+δ> Nanocrystals Studied by Electron Spin Resonance (2008)
  • Author(s): T. Tajiri, H. Deguchi, S. Kohiki, M. Mito, S. Takagi, M. Mitome, Y. Murakami, A. Kohno
  • Journal Title: J. Phys. Soc. Jpn 77 Pages: 74715-74715
  • Peer Reviewed
• [Journal Article] Oxygen-molecule spin-nano-tubes constructed by physisorption into a nano-porous medium (2008)
  • Author(s): M. Mito, N. Shinto, Y. Komorida, T. Tajiri, H. Deguchi, S. Takagi and S. Kohiki
  • Journal Title: Phys. Rev. B 78 Pages: 64428-64428
  • Peer Reviewed
• [Journal Article] Pressure-induced ferromagnetic to nonmagnetic transition and the enhancement of ferro magnetic interaction in the thiazyl-based organic ferromagnet γ-BBDTA GaCL_4 (2008)
  • Author(s): M. Mito, M. Fujino, Y. Komorida, H. Deguchi, S. Takagi, W. Fujita and K. Awaga
  • Journal Title: J. Phys. Soc. Jpn 77 Pages: 124719-124719
  • Peer Reviewed
• [Journal Article] Interpenetrated Three-Dimensional Mn(II)M(III)Ferrimagnets, [Mn(4dmap)_4]_3[M(CN)_6]_2 10H_2O (M=Cr, Mn):Structures, Magnetic Properties and Pressure- Responsive Magnetic Modulation. (2008)
  • Author(s): W. Kaneko, M. Mito, S. Kitagawa, M. Ohba
  • Journal Title: Chemistry - A European Journal. 14 Pages: 3481-3489
  • Peer Reviewed
• [Journal Article] Pressure Response of Three-dimensional Cyanide-bridged Bimetallic Magnets (2008)
  • Author(s): M. Ohba, W. Kaneko, S. Kitagawa, T. Maeda and M. Mito
  • Journal Title: Journal of the American Chemical Society 130 Pages: 4475-4484
  • Peer Reviewed
• [Journal Article] Pressure Effects on γ-Fe2O3 Nanoparticles (2007)
  • Author(s): Y. Komorida, M. Mito, H. Deguchi, S. Takagi, A. Millan and F. Palacio
  • Journal Title: Journal of Magnetism and Magnetic Materials Vol. 310, Issue 2
  • Peer Reviewed
• [Journal Article] Heat capacity and ac magnetic susceptibility measurements of magnetic Superconductor HoNi_2B_2C under pressure (2007)
  • Author(s): M. Mito, T. Tanimoto, T. Kawae, K. Takeda, J. H. Choi and S. I. Lee
  • Journal Title: Journal of the Physical Society of Japan, Supplement A 76 Pages: 148-149
  • Peer Reviewed
• [Journal Article] Effect of pressure on a chiral two-dimensional ferrimagnet (2007)
  • Author(s): K. Iriguchi, Y. Komorida, I. Akiyama, M. Mito, J. Kishine, H. Deduchi, Y. Yoshhida and K. Inoue
  • Journal Title: Journal of the Physical Society of Japan, Supplement A 76 Pages: 192-193
  • Peer Reviewed
• [Journal Article] Magnetic measurements on molecule-based magnets under high pressure (2007)
  • Author(s): M. Mito
  • Journal Title: Journal of the Physical Society of Japan, Supplement A 76 Pages: 182-185
  • Peer Reviewed
• [Presentation] FePt磁性ナノ粒子の高圧力下磁気測定・構造解析 (2009)
  • Author(s): 小森田裕貴,鶴田英樹,美藤正樹,高木精志,出口博之,岩本多加志,北本仁孝
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] FePt磁性ナノ粒子のESR測定による磁気異方性評価 (2009)
  • Author(s): 鶴田英樹,小森田裕貴,美藤正樹,高木精志,出口博之,岩本多加志,北本仁孝
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] 磁性ナノ粒子FePtの電子スピン共鳴 (2008)
  • Author(s): 鶴田英樹,小森田裕貴,美藤正樹,高木精志,出口博之,岩本多加志,北本仁孝
  • Organizer: 第114回日本物理学会九州支部例会
  • Place of Presentation: 福岡教育大学
  • Year and Date: 2008-12-06
• [Presentation] 反強磁性ナノ粒子Ferrihydriteの磁気特性における圧力効果 (2008)
  • Author(s): 小森田裕貴,N. J. O. Silva,美藤正樹,出口博之,高木精志,F. Palacio, V. S. Amaral
  • Organizer: 第114回日本物理学会九州支部例
  • Place of Presentation: 福岡教育大学
  • Year and Date: 2008-12-06
• [Presentation] 反強磁性ナノ粒子Ferrihydriteの磁気特性における圧力効果 (2008)
  • Author(s): 小森田裕貴, N. J. O. Siva, 美藤正樹, 出口博之, 高木精志, F. Palaoio, V. S. Amaral
  • Organizer: 第114回日本物理学会九州支部例会
  • Place of Presentation: 福岡教育大学
  • Year and Date: 2008-12-06
• [Presentation] マグへマイト磁性ナノ粒子の高圧力下構造解析 (2007)
  • Author(s): 小森田裕貴,美藤正樹,出口博之,高木精志,A. Millan, N. J. O. Silva, F. Palacio
  • Organizer: 第113回日本物理学会九州支部例会
  • Place of Presentation: 大分大学
  • Year and Date: 2007-12-01
• [Presentation] マグヘマイト磁性ナノ粒子の高圧力下構造解析 (2007)
  • Author(s): 小森田裕貴, 美藤正樹, 出口博之, 高木精志, A. Millan, N. J. O. Silva, F. Palacio
  • Organizer: 第113回日本物理学会九州支部例会
  • Place of Presentation: 大分大学
  • Year and Date: 2007-12-01
• [Presentation] Ferrihydrite系磁性ナノ粒子の磁気特性における圧力効果 (2007)
  • Author(s): 小森田裕貴,N. J. O. Silva,美藤正樹,出口博之,高木精志,V.de Zea Bermudez, F. Palacio, V. S. Amaral, L. D. Carlos
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
• [Presentation] Ferrihydrite系磁性ナノ粒子の磁気特性における圧力効果 (2007)
  • Author(s): 小森田裕貴, N. J. O. Silva, 美藤正樹, 出口博之, 高木精志, V. de Zea Bermudez, F. Palacio, V. S. Amaral, L. D. Carlos
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
• [Book] 多孔体の精密制御と機能・物性評価(「46.メソ多孔体中での酸素分子、NO分子の磁気挙動」を執筆) (2008)
  • Author(s): 美藤正樹、出口博之、古曳重美
  • Publisher: サイエンス&テクノロジー(株)
• [Patent(Industrial Property Rights)] ピストンシリンダー型の高圧力発生装置 (2008)
  • Inventor(s): 美藤正樹,濱田正吉
  • Industrial Property Rights Holder: 九州工業大学・(株)HMD
  • Industrial Property Number: 2008-151191
  • Filing Date: 2008-06-10
• [Patent(Industrial Property Rights)] ピストンシリンダー型の高圧力発生装置 (2008)
  • Inventor(s): 美藤正樹,濱田正吉
  • Industrial Property Rights Holder: 九州工業大学・(株)HMD
  • Filing Date: 2008-06-10