Local Structure Analysis of SmFe<sub>2</sub> and TbFe<sub>2</sub>

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Author(s)

    • Kohara Shinji
    • Research and Utilized Division, Japan Synchrotron Radiation Research Institute
    • Ito Masayoshi
    • Research and Utilized Division, Japan Synchrotron Radiation Research Institute
    • Abe Hiroshi
    • Japan Atomic Energy Agency (JAEA), Radiation Effects Group, Environment and Industrial Materials Research Division
    • Takeuchi Mitsuaki
    • Department of Energy Science and Engineering, Schools of Engineering, Tokai University
    • Uchida Hirohisa
    • Department of Energy Science and Engineering, Schools of Engineering, Tokai University
    • Matsumura Yoshihito
    • Department of Energy Science and Engineering, Schools of Engineering, Tokai University

Abstract

We performed local structure analysis of SmFe<sub>2</sub> and TbFe<sub>2</sub> in the crystallization process from amorphous by using synchrotron X-ray pair-distribution function (PDF) method. The giant mangetostrictive materials of these compounds can be controlled its property by ion irradiation. In amorphous TbFe<sub>2</sub> and SmFe<sub>2</sub>, the mosaic block size was small and the short-range order structure owing to Fe-Fe network maintained. In crystalline SmFe<sub>2</sub>, a rigid long-range order structure of Fe-Fe and Sm-Sm network coexisted and it had a large mosaic block size. On the other hand, in crystalline TbFe<sub>2</sub>, Fe-Fe network degraded by Tb-Tb network owing to its lattice tolerance. The difference of the local structure is a cause of the difference in the Ar-ion irradiation effect.

Journal

  • Transactions of the Materials Research Society of Japan

    Transactions of the Materials Research Society of Japan 38(1), 109-112, 2013

    The Materials Research Society of Japan

Codes

  • NII Article ID (NAID)
    130005004174
  • Text Lang
    ENG
  • ISSN
    1382-3469
  • Data Source
    J-STAGE 
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