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    National Tsing Hua University Institutional Repository > 歷任校長 > 陳信雄 (1997-1998) > 期刊論文 >  Surface Properties of a Ferromagnet Near the Critical Temperature: Molecular-Field Approximation

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/80717

    Title: Surface Properties of a Ferromagnet Near the Critical Temperature: Molecular-Field Approximation
    Authors: H.H. Chen;C.S. Hsue
    教師: 陳信雄
    Date: 1974
    Publisher: Institute of Physics
    Relation: Journal of Physics C: Solid State Physics, Institute of Physics, Volume 7, Issue 22, 1974, Pages 4104-4112
    Keywords: Ferromagnet
    Molecular-Field Approximation
    Abstract: The thermodynamic properties associated with the surface layer of a Heisenberg ferromagnet on the semi-infinite simple cubic lattice are examined systematically in the molecular-field approximation. The surface critical temperature and the critical exponents are determined for various ratios of the surface exchange constant Js=(1+ Delta )J to the bulk exchange constant J. It is found that the surface critical temperature Tcs is higher than the bulk transition temperature Tcb for 4 Delta >1. In this case the surface critical exponents are identical with the bulk exponents. On the other hand, for 4 Delta <1, it is found that the surface and the bulk phase transitions occur at the same temperature, but with different critical exponents.
    Relation Link: http://www.iop.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/80717
    Appears in Collections:[陳信雄 (1997-1998)] 期刊論文
    [物理系] 期刊論文

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