Distribution of Spin Polarization in Ferrimagnetic DyFe_2 by a Novel Analysis of Magnetic EXAFS

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概要

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• IVIagnetic EXAFS (IVIEXAFS) at the Fe K-edge in DyFez powder and an Fe thin filun werenaeasured. In order to derive a f'errinaagnetic cotrpling of spin moments between Dy and Fefrom IMEXAFS spectra, novel analysis for IVIEXAFS has been tried. The oar) profiles, whichare defined as the difference between the absolute va[tres of Fotrrier transf'ormed A"y(; (A) andA'X (A), were calctrlated for the taaeasured spectra, X+ (A) and X (A) are EXAFS ftrnctions whenthe correlation between a X-ray beam and a taaagnetic field applied to a sanaple is parallel andanti-parallel, respectively. The oar) has well described the distribution of spin polarization withits sign for f'errinaagnetic Dyeed. A sirtatrlated distribution profile, in xvhich only spin naotaaentswere considered, has been cornpared with the<v(r) in DyFe3 and a good councudence betweenthem has been obtained. The cr(r) profile for an Fe thin filtn cornpletely reflects the f'erromagneticcharacter and this restnlt supports the validity of the present analysis.

• 社団法人日本物理学会の論文
• 1998-11-15

著者

• Nakamura T

  Waseda Univ. Tokyo Jpn

• 中村 龍史

  Department Of Applied Physics Waseda University

• WATANABE Yasuhiro

  Institute of Industrial Sciences, The University of Tokyo

• NANAO Susumu

  Institute of Industrial Sciences, The University of Tokyo

• Nakamura Tota

  Department Of Applied Physics Tohoku University

• Nakamura Tetsuya

  Institute of Industrial Science,University of Tokyo

• Watanabe Y

  Department Of Physics Kwansei-gakuin University

• Nakayashiki Takashi

  Department Of Molecular Engineering Graduate School Of Engineering Kyoto University

• Nakamura T

  Institute For Molecular Science

• Nanao Susumu

  Institute Of Industrial Science The University Of Tokyo

• MIZUMAKI Masaichiro

  Institute of Industrial Science,University of Tokyo

• Watanabe Y

  Institute For Materials Research Tohoku University

• Nakamura Takayoshi

  Research Institute For Electronic Science And Graduate School Of Environmental Earth Science Hokkaid

• Watanabe Yasuhiro

  Institute Of Industrial Science University Of Tokyo

• Watanabe Yasuhiro

  Institute for Materials Research, Tohoku University

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