Appearance of ferromagnetism in nanoscaled 4d/5d transition metal induced by electrical, optical and dynamical techniques

2009 Fiscal Year Final Research Report

• Project/Area Number: 19310077
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Keio University
• Principal Investigator: SATO Tetsuya Keio University, 理工学部, 教授 (20162448)
• Co-Investigator(Kenkyū-buntansha): MAKI Hideyuki 慶應義塾大学, 理工学部, 専任講師 (10339715) ; SHINOHARA Takenao 独立行政法人日本原子力研究開発機構, 量子ビーム応用部門, 博士研究員 (90425629) ; KAGESHIMA Hiroyuki 日本電信電話株式会社NTT物性科学基礎研究所, 量子電子物性研究部, 主任研究員 (70374072) ; EINAGA Yasuaki 慶應義塾大学, 理工学部, 准教授 (00322066)
• Project Period (FY): 2007 – 2009
• Keywords: ナノ多機能材料 / 強磁性誘起

Research Abstract

Some of 4d/5d transition metals, e.g., Pd and Pt, have nearly ferromagnetic nature, and thus appearance of ferromagnetism is expected through increase in density of states at Fermi energy under a certain condition. When these materials have low-dimensional structures, especially, the magnetic change from nonmagnetic to ferromagnetic states can be manipulated through some extrinsic operation. Such a nonmagnetic to ferromagnetic switching can be used for the development of magnetic devices. In this study, the fundamentals of magnetic manipulation, which is based on the induction of ferromagnetism to satisfy Stoner's criteria by changing the density of states using electrical, optical and dynamical techniques, were investigated.

Research Products

• [Journal Article] Redox-induced modification of magnetism in Ni thin film (2009)
  • Author(s): N. Hiraoka, Y, Oba, T. Watanabe, H. Maki, Y. Einaga, T. Sato
  • Journal Title: e-Journal of Surface Science and Nanotechnology Vol.7 Pages: 787-790
  • Peer Reviewed
• [Journal Article] Electrical detection of ferromagnetism in Pd nanoparticles by magnetoresistance measurement (2009)
  • Author(s): Takao Okamoto, Hideyuki Maki, Yojiro Oba, Shin Yabuuchi, Tetsuya Sato, Eiji Ohta
  • Journal Title: ournal of Applied Physics Vol.106,No.2 Pages: 023908/1-5
  • Peer Reviewed
• [Journal Article] Magnetic interparticle structure in ferromagnetic Pd nanoparticle (2009)
  • Author(s): Yojiro Oba, Takenao Shinohara, Takayuki Oku, Jun-ichi Suzuki, Masato Ohnuma, Tetsuya Sato
  • Journal Title: ournal of Physical Society Japan Vol.78,No.4 Pages: 044711 /1-6
  • Peer Reviewed
• [Journal Article] Ferromagnetism Induced by Strains in Pd Nanoparticles (2008)
  • Author(s): Yojiro Oba, Tetsuya Sato, Takenao Shinohara
  • Journal Title: Physical Review B Vol.78,No.22 Pages: 224417/1-5
  • Peer Reviewed
• [Journal Article] Magnetism of Single-Walled Carbon Nanotube with Pd Nanowire (2008)
  • Author(s): Satoru Ohno, Yojiro Oba, Shin Yabuuchi, Tetsuya Sato, Hiroyuki Kageshima
  • Journal Title: Journal of Physical Society Japan Vol.77,No.10 Pages: 104713/1-6
  • Peer Reviewed
• [Journal Article] X-ray magnetic circular dichroism study in ferromagnetic Pd nanoparticle, Journal of Physics (2008)
  • Author(s): Y. Oba, H. Okamoto, T. Sato, T. Shinohara, J. Suzuki, T. Nakamura, T. Muro, H. Osawa
  • Journal Title: D: Applied Physics Vol.41,No.13 Pages: 34024 /1-5
  • Peer Reviewed
• [Journal Article] Size depndence of martensite transformation temperature in ferromagnetic shape memory alloy FePd (2008)
  • Author(s): Kenta Seki, Hiroaki Kura, Tetsuya Sato, Tomoyasu Taniyama
  • Journal Title: Jouranl of Applied Physics Vol.103,No.6 Pages: 063910/1-9
  • Peer Reviewed
• [Presentation] 清浄な表面を持つAuナノ粒子の磁性 (2009)
  • Author(s): 佐藤寛之、佐藤徹哉
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] 第一原理計算によるPt薄膜の磁性」日本物理学会 (2009)
  • Author(s): 山田都照、影島博之、佐藤徹哉
  • Organizer: 2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] Pdナノ粒子内部の磁気構造と強磁性発現メカニズム (2009)
  • Author(s): 大場洋次郎、佐藤徹哉、篠原武尚、奥隆之、鈴木淳市
  • Organizer: 日本物理学会第64会年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] 電気化学反応を用いたNi薄膜の磁気異方性制御 (2009)
  • Author(s): 平岡徳将、大場洋次郎、渡辺剛志、牧英之, 栄長泰明、佐藤徹哉
  • Organizer: 日本物理学会第64会年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] 表面修飾された強磁性Ptナノ粒子の磁気特性 (2009)
  • Author(s): 坂本泰浩、大場洋次郎、藏裕彰、須田理行、牧英之, 栄長泰明、佐藤徹哉
  • Organizer: 日本物理学会第64会年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] Redox-induced modification of magnetism in transition metal thin film (2008)
  • Author(s): Norimasa Hiraoka, Yojiro Oba, Takeshi Watanabe, Hideyuki Maki, Yasuaki Einaga, Tetsuya Sato
  • Organizer: The 5th International Symposium on Surface Science and Nanotechnology
  • Place of Presentation: Waseda Univ. (Japan)
  • Year and Date: 2008-11-11
• [Presentation] Pdナノ粒子の偏極中性子小角散乱実験 (2008)
  • Author(s): 大場洋次郎、篠原武尚、奥隆之、鈴木淳市、佐藤徹哉
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] 属-電界液界面に生じる電気二重層を用いた遷移金属薄膜の磁性制御 (2008)
  • Author(s): 平岡徳将、大場洋次郎、渡辺剛正、牧英之、栄長泰明、佐藤徹哉
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] 表面修飾されたPtナノ粒子における強磁性発現 (2008)
  • Author(s): 坂本泰浩、藏裕彰、須田理行、牧英之、栄長泰明、佐藤徹哉
  • Organizer: 日本物理学会第63回年次大会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] X-ray magnetic circular dichroism study in ferromagnetic Pd nanoparticle (2007)
  • Author(s): Y. Oba, H. Okamoto, T. Sato, T. Shinohara, J. Suzuki, T. Nakamura, T. Muro, H. Osawa
  • Organizer: 6th international conference of fine particle magnetism (ICFPM)
  • Place of Presentation: Rome (Italy)
  • Year and Date: 2007-10-10
• [Presentation] 第一原理計算による二次元系Pdの磁性発現に関する研究 (2007)
  • Author(s): 浦山太一、影島博之、佐藤徹哉
  • 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] ESRによるPdナノ粒子の磁性と軌道角運動量の評価 (2007)
  • Author(s): 岡本啓明、大場洋次郎、佐藤徹哉
  • 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: 2007-09-21
• [Presentation] Pdナノ粒子のX線磁気円二色性実験 (2007)
  • Author(s): 大場洋次郎、岡本啓明、佐藤徹哉、中村哲也、大沢仁志、室隆桂之, 篠原武尚、鈴木淳市
  • 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: 2007-09-21
• [Presentation] 2次元配列させたPdナノ粒子の磁気特性および電気伝導性 (2007)
  • Author(s): 岡本崇生、籔内真、牧英之、佐藤徹哉、太田英二、谷山智康
  • Organizer: 第68回応用物理学会学術講演会
  • Place of Presentation: 北海道工業大学
  • Year and Date: 2007-09-05
• [Presentation] カーボンナノチューブに内包したPdナノワイヤーの作製 (2007)
  • Author(s): 平岡徳将、牧英之、佐藤徹哉
  • Organizer: 日本材料科学会平成19年度学術講演大会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2007-05-25
• [Presentation] Magnetism and conductance of Pd nanoparticles (2007)
  • Author(s): Takao Okamoto, Shin Yabuuchi, Hideyuki Maki, Tetsuya Sato, Eiji Ohta, Tomoyasu Taniyama
  • Organizer: 1st International Conference on Science and Technology for Advanced Ceramics (STAC) and 2nd International Conference on Joining Technology for New Metallic Glasses and Inorganic Materials (JTMC)
  • Place of Presentation: Shonan Village Center (Japan)
  • Year and Date: 2007-05-24
• [Remarks] 学科および研究室ホームページ
  • URL: http://www.appi.keio.ac.jp/annrep1/2007/sato.htmlhttp://www.az.appi.keio.ac.jp/satohlab/