Nano X-ray magnetometry in a single magnetic dot in bit-patterned media

• Project/Area Number: 23360016
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: SUZUKI Motohiro 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 主幹研究員 (60443553)
• Research Collaborator: KONDO Yuji 秋田県産業技術センター, 先端機能素子開発部, 主任研究員 (70390903)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2012: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2011: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
• Keywords: 磁性体 / 磁気記録 / 放射線、Ｘ線 / 放射線、Ｘ線、粒子線 / 磁性 / 放射線、X線、粒子線

Research Abstract

A nano X-ray magnetometry technique was developed to analyze the magnetic properties of bit-patterned media, a candidate for the next-generation high-density magnetic storage, in an atomic level. A brilliant synchrotron radiation X-ray beam was successfully focused to a spot of 100 nm in diameter and enabled X-ray magnetic circular dichroism spectroscopy and element-specific magnetic analysis with this beam size. The technique has been applied to CoPt bit-patterned media sample. Magnetization reversal processes of a single magnetic dot of a 200 nm diameter were elucidated and the microscopic origin of the switching field distribution was discussed. Towards ultimate analysis of real terabit media, a preliminary result in a smaller 36 nm diameter dot has recently been obtained.

Research Products

• [Journal Article] Switching field distribution and magnetization reversal process of FePt dot patternsSwitching field distribution and magnetization reversal process of FePt dot patterns (2014)
  • Author(s): S.Ishio, S.Takahashi, T.Hasegawa, A.Arakawa, H.Sasaki, Z.Yan, X.Liu, Y.Kondo, H.Yamane, J.Ariake, M.Suzuki, N.Kawamura, and M.Mizumaki
  • Journal Title: J. Magn. Magn. Mater. Volume: 360 Pages: 205-205
  • DOI: 10.1016/j.jmmm.2014.02.049
  • Peer Reviewed
• [Journal Article] Measurement of Coercive Force Enhanced by Nanometer-Sizing of Magnetic Dot by X-Ray Magnetic Circular Dichroism (XMCD) (2013)
  • Author(s): S.Hosaka, Z.Bin MOHAMAD, Y.Yin, H.Sakurai, Y.Kondo, J.Ariake, N.Honda, and M.Suzuki
  • Journal Title: Key Engineering Materials Volume: 534 Pages: 122-122
  • DOI: 10.4028/www.scientific.net/kem.534.122
  • Peer Reviewed
• [Journal Article] Recent Progress of the X-ray Magnetic Circular Dichroism Technique for Element-Specific Magnetic Analysis (2013)
  • Author(s): T.Nakamura and M.Suzuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 82 Pages: 21006-21006
  • NAID: 210000132375
  • Peer Reviewed
• [Journal Article] A hard Xray nanospectroscopy station at SPring-8 BL39XU (2013)
  • Author(s): M.Suzuki, N.Kawamura, M.Mizumaki, Y.Terada, T.Uruga, A.Fujiwara, H.Yamazaki, H.Yumoto, T.Koyama, Y.Senba, T.Takeuchi, H.Ohashi, N.Nariyama, K.Takeshita, H.Kimura, T.Matsushita, Y.Furukawa, T.Ohata, Y.Kondo, J.Ariake, J.Richter, P.Fons, O.Sekizawa, N.Ishiguro, M.Tada, S.Goto, M.Yamamoto, M.Takata, and T.Ishikawa
  • Journal Title: J. Phys. : Conf. Volume: 430 Pages: 12017-12017
  • DOI: 10.1088/1742-6596/430/1/012017
  • Peer Reviewed
• [Journal Article] Coercive Force Enhanced by Nanometer-Sizing of Magnetic Column and Measured by X-Ray Magnetic Circular Dichroism (XMCD) (2012)
  • Author(s): S.Hosaka, Z.Mohamad, T.Akahane, Y.Yin, H.Sakurai, Y.Kondo, J.Ariake, N.Honda, and M.Suzuki
  • Journal Title: Advanced Materials Research Volume: 490-495 Pages: 292-292
  • DOI: 10.4028/www.scientific.net/amr.490-495.292
  • Peer Reviewed
• [Journal Article] The SR nanobeam analysis center for green/nanotechnologies at BL37XU and BL39XU (2012)
  • Author(s): M.Suzuki, Y.Terada, and H.Ohashi
  • Journal Title: SPring-8 Research Frontiers 2011 Pages: 151-151
  • URL: http://www.spring8.or.jp/pdf/en/res_fro/11/151-152.pdf
• [Journal Article] Measurement of a Pauli and Orbital Paramagnetic State in Bulk Gold Using X-Ray Magnetic Circular Dichroism Spectroscopy (2012)
  • Author(s): M.Suzuki, N.Kawamura, H.Miyagawa, J.S.Garitaonandia, Y.Yamamoto, and H.Hori
  • Journal Title: Phys. Rev. Lett. Volume: 108 Issue: 4 Pages: 47201-47201
  • DOI: 10.1103/physrevlett.108.047201
  • Peer Reviewed
• [Journal Article] グリーン・ナノテク研究支援のための放射光分析基盤の整備(BL37XU、BL39XU) (2011)
  • Author(s): 鈴木基寛, 寺田靖子,大橋治彦, 他25名
  • Journal Title: SPring-8 利用者情報 Volume: 16 Pages: 201-201
  • URL: http://user.spring8.or.jp/sp8info/?p=20925
• [Journal Article] グリーン・ナノテク研究支援のための放射光分析基盤の整備(BL37XU、BL39XU) (2011)
  • Author(s): 鈴木基寛, 他
  • Journal Title: SPring-8利用者情報 Volume: 16 Pages: 201-209
• [Presentation] 硬X線100nm ビームがリードするSPring-8 ナノビームアプリケーション (2013)
  • Author(s): 鈴木基寛
  • Organizer: 平成24年度GIGNO 研究創生支援プロジェクト研究会
  • Place of Presentation: 連合会館
  • Year and Date: 2013-03-12
• [Presentation] SPring-8 BL39XU におけるナノビームX線磁気解析 (2013)
  • Author(s): 鈴木基寛
  • Organizer: SPring-8 利用推進協議会 先端磁性材料研究会
  • Place of Presentation: 連合会館
  • Year and Date: 2013-03-11
• [Presentation] 放射光ナノプローブ:顕微・時分割X線分光による機能材料解析 (2013)
  • Author(s): 鈴木基寛
  • Organizer: 日本学術振興会マイクロビームアナリシス 第141委員会 第151回研究会
  • Place of Presentation: 京都大学東京オフィス
  • Year and Date: 2013-02-07
• [Presentation] 放射光ナノプローブ：顕微・時分割X線分光による機能材料解析 (2013)
  • Author(s): 鈴木基寛
  • Organizer: 日本学術振興会マイクロビームアナリシス第141委員会 第151回研究会
  • Place of Presentation: 京都大学 東京オフィス、東京都
  • Invited
• [Presentation] SPring-8 BL39XUにおけるナノビームＸ線磁気解析 (2013)
  • Author(s): 鈴木基寛
  • Organizer: SPring-8利用推進協議会 先端磁性材料研究会（第6回）
  • Place of Presentation: 連合会館、東京都
  • Invited
• [Presentation] 硬X線100nmビームがリードするSPring-8ナノビームアプリケーション (2013)
  • Author(s): 鈴木基寛
  • Organizer: 平成24年度GIGNO研究創成支援プロジェクト研究会
  • Place of Presentation: 連合会館、東京都
  • Invited
• [Presentation] X線ナノビームによる顕微磁気解析と磁気イメージング (2012)
  • Author(s): 鈴木基寛
  • Organizer: 第45回化合物新磁性材料研究会
  • Place of Presentation: 東京大学本郷キャンパス
  • Year and Date: 2012-12-27
• [Presentation] Development of Hard X-ray Nanospectroscopy Experiments at SPring-8 (2012)
  • Author(s): M.Suzuki
  • Organizer: The 24th Synchrotron Radiation User's Workshop & KOUSA Meeting
  • Place of Presentation: POSTEC International Center, Korea
  • Year and Date: 2012-11-22
• [Presentation] SPring-8 BL39XU 硬X線ナノ分光ステーション (2012)
  • Author(s): 鈴木基寛
  • Organizer: 第15回XAFS 討論会
  • Place of Presentation: 鳥取市白兎会館
  • Year and Date: 2012-09-12
• [Presentation] Hard X-ray nano-spectroscopy station at SPring-8 BL39XU (2012)
  • Author(s): M.Suzuki
  • Organizer: XAFS-XV : 15th International Conference on X-ray Absorption Fine Structure
  • Place of Presentation: Beijing, China
  • Year and Date: 2012-07-23
• [Presentation] ナノドット磁気デバイスの開発戦略と放射光活用 (2012)
  • Author(s): 近藤祐治、有明順、鈴木基寛
  • Organizer: 第5回放射光連携研究ワークショップ-SPring-8のナノアプリケーションが拓くイノベーション-
  • Place of Presentation: 東京大学山上会館
  • Year and Date: 2012-02-23
• [Presentation] BL39XU ナノビームX線分光分析ステーション (2012)
  • Author(s): 鈴木基寛
  • Organizer: 第25回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 鳥栖市民文化会館・中央公民館
  • Year and Date: 2012-01-09
• [Presentation] BL39XUナノビームX線分光分析ステーション (2012)
  • Author(s): 鈴木基寛, 他
  • Organizer: 第25回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 鳥栖市民文化会館・中央公民館
  • Year and Date: 2012-01-09
• [Presentation] Hard X-ray nano-spectroscopy station at SPring-8 BL39XU (2012)
  • Author(s): Motohiro Suzuki
  • Organizer: XAFS-XV: 15th International Conference on X-Ray Absorption Fine Structure
  • Place of Presentation: Beijing, China
• [Presentation] SPring-8 BL39XU 硬X線ナノ分光ステーション (2012)
  • Author(s): 鈴木基寛
  • Organizer: 第15回XAFS討論会
  • Place of Presentation: 鳥取市白兎会館、鳥取県
• [Presentation] Development of Hard X-ray Nanospectroscopy Experiments at SPring-8 (2012)
  • Author(s): Motohiro Suzuki
  • Organizer: The 24th Synchrotron Radiation User's Workshop &KOUSA Meeting
  • Place of Presentation: POSTECH International Center, Korea
  • Invited
• [Presentation] X線ナノビームによる顕微磁気解析と磁気イメージング (2012)
  • Author(s): 鈴木基寛
  • Organizer: 第45回 化合物新磁性材料研究会
  • Place of Presentation: 東京大学 本郷キャンパス、東京都
  • Invited
• [Remarks] SPring-8 BL39XU におけるナノビーム磁気解析
  • URL: http://www.spring8.or.jp/ext/ja/iuss/htm/text/12file/adv_mag_mat/6th/130311-6_suzuki.pdf
• [Remarks] The SR nanobeam analysis center for green-nanotech
  • URL: http://www.spring8.or.jp/pdf/en/res_fro/11/Research_Frontiers_2011_%20web.pdf
• [Remarks] SPring-8 BL39XUにおけるナノビーム磁気解析
  • URL: http://www.spring8.or.jp/ext/ja/iuss/htm/text/12file/adv_mag_mat/6th/130311-6_suzuki.pdf
• [Remarks]
  • URL: http://user.spring8.or.jp/sp8info/?p=20925