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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/52843

    Title: Short range magnetic correlations induced by La substitution in Ho(1-x)La(x)Mn(2)O(5)
    Authors: Wang,CW;Wu,CM;Li,CY;Karna,SK;Hsu,CK;Li,CHC;Li,WH;Yu,CC;Wu,CP;Chou,H;Lynn,JW
    Contributors: 物理學系
    Date: 2010
    Issue Date: 2012-06-11 10:46:55 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Magnetic susceptibility, x-ray diffraction, neutron diffraction and Raman scattering measurements are employed to study the effects of La substitution on the magnetic properties of multiferroic HoMn(2)O(5). 9% and 18% La-substituted compounds crystallize into the same orthorhombic Pbam symmetry as the parent compound. The magnetic responses to an ac driving magnetic field between 40 and 140 K are greatly enhanced by 18% La substitution. The neutron magnetic diffraction patterns reveal the development of short range magnetic correlations below 140 K. In addition, two Raman peaks and a series of new x-ray diffraction peaks suddenly develop below this temperature. Incommensurate long range antiferromagnetic order appears below 38 K. Magnetic frustration could be the main mechanism governing the present observations.
    Appears in Collections:[物理學系] 期刊論文

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