NMR and Magnetic Studies of Mechanically Alloyed Co_<30>M_<70> (M=Cu, Ag, Au)

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Author(s)

Abstract

Zero-field ^<59>Co NMR, X-ray diffraction (XRD) and magnetization measurements have been made to investigate the mechanical alloying (MA) of ferromagnetic Co_<30>M_<70> (M=Cu, Ag and Au) powder as a function of milling time (MT). The MA in Co_<30>Cu_<70> proceeds rapidly with increasing MT by both the processes of dissolving Cu in the Co matrix and Co in the Cu matrix and is nearly completed for MT=100h. In Co_<30>Ag_<70> the MA hardly proceeds even for MT=300h or more. The MA in Co_<30>Au_<70> proceeds much more slowly than that in Co_<30>Cu_<70> with increasing MT up to 150h and takes place rapidly for MT≈200h. The magnetizations and NMR spectra of the Co_<30>Cu_<70> and Co_<30>Au_<70> samples for MT=200h are similar to each other, indicating that both the samples form similar supersaturated alloys. NMR results of the Co_<30>M_<70> samples milled for MT=200h show large spin fluctuations of Co atoms, which are due to fine sizes of clusters, suggesting that the samples milled for long times consist of nanometer-size clusters.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 74(9), 2598-2603, 2005-09-15

    The Physical Society of Japan (JPS)

References:  14

  • <no title>

    SURYANARAYANA C.

    Prog. Mater. Sci. 46, 1, 2001

    Cited by (1)

  • <no title>

    MASSALSKI T. B. ed.

    Binary Alloy Phase Diagrams 2, 1182, 1990

    Cited by (1)

  • <no title>

    MASSALSKI T. B. ed.

    Binary Alloy Phase Diagrams 1, 26, 1990

    Cited by (1)

  • <no title>

    MASSALSKI T. B. ed.

    Binary Alloy Phase Diagrams 1, 356, 1990

    Cited by (1)

  • <no title>

    UEDA Y.

    Jpn. J. Appl. Phys. 35, 3414, 1996

    Cited by (1)

  • <no title>

    YASUNA K.

    Mater. Sci. Forum 235-238, 825, 1997

    Cited by (1)

  • <no title>

    KITTEL C.

    Introduction to Solid State Physics, 1996

    Cited by (1)

  • <no title>

    NASU S.

    Acta Metall. 19, 561, 1971

    Cited by (1)

  • <no title>

    GOSSARD A. C.

    Phys. Rev. 138, A1415, 1965

    Cited by (1)

  • <no title>

    KOI Y.

    J. Phys. Soc. Jpn. 17(Suppl. B1), 96, 1962

    Cited by (1)

  • <no title>

    ZHOU G. F.

    Mater. Sci. Forum 225-227, 655, 1996

    Cited by (1)

  • <no title>

    MODDER I. W.

    Physica B 245, 363, 1998

    Cited by (1)

  • <no title>

    AIZAWA T.

    Mater. Sci. Eng. A 285, 1, 2000

    Cited by (1)

  • NMR and Magnetic Studies of Mechanically Alloyed Co_<75> Ti_<25>

    HIRAOKA Koichi , KASHIBA Saburo , TOMIYOSHI Shoichi

    Journal of the Physical Society of Japan 72(6), 1523-1527, 2003-06-15

    References (6) Cited by (3)

Cited by:  1

Codes

  • NII Article ID (NAID)
    110002245749
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00319015
  • NDL Article ID
    7439643
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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