2013 Fiscal Year Final Research Report
Nano X-ray magnetometry in a single magnetic dot in bit-patterned media
| Project/Area Number |
23360016
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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 |
Applied materials science/Crystal engineering
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| Research Institution | Japan Synchrotron Radiation Research Institute |
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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)
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| 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)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 磁性体 / 磁気記録 / 放射線、Ｘ線 |
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| 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.
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[Journal Article] Switching field distribution and magnetization reversal process of FePt dot patternsSwitching field distribution and magnetization reversal process of FePt dot patterns2014
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
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Journal Title
J. Magn. Magn. Mater.
Volume: 360
Pages: 205
DOI
Peer Reviewed
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[Journal Article] A hard Xray nanospectroscopy station at SPring-8 BL39XU2013
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
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Journal Title
J. Phys. : Conf.
Volume: 430
Pages: 012017
DOI
Peer Reviewed
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