Magnetic ordering in pyrochlore Ho2Mn2O7

N.P. Raju, J.E. Greedan, J.S. Pedersen, C. Simon, A. Maignan, A.M. Niraimathi, E. Gmelin, M.A. Subramanian

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    Abstract

    The magnetic susceptibility of Ho2Mn2O7 With a spontaneous rise below about 40 K and a paramagnetic Curie temperature of +39 K suggests a ferromagnetic ordering. Indeed neutron diffraction profiles show strongly enhanced Bragg peaks with a temperature dependence which indicates an apparent T-c approximate to 35 K. Nonetheless, the magnetic diffraction pattern is not consistent with a collinear ferro or ferrimagnetic ordering of the Ho3+ and Mn4+ sublattices. Furthermore, specific heat and small angle neutron scattering (SANS) show features which are also incompatible with conventional long-range order. (C) 1996 American Institute of Physics.
    Original languageEnglish
    JournalJournal of Applied Physics
    Volume79
    Issue number8
    Pages (from-to)6173-6175
    ISSN0021-8979
    DOIs
    Publication statusPublished - 1996
    Event40th Annual Conference on Magnetism and Magnetic Materials - Philadelphia, (PA), United States
    Duration: 6 Nov 19959 Nov 1995
    Conference number: 40

    Conference

    Conference40th Annual Conference on Magnetism and Magnetic Materials
    Number40
    CountryUnited States
    CityPhiladelphia, (PA)
    Period06/11/199509/11/1995

    Cite this

    Raju, N. P., Greedan, J. E., Pedersen, J. S., Simon, C., Maignan, A., Niraimathi, A. M., Gmelin, E., & Subramanian, M. A. (1996). Magnetic ordering in pyrochlore Ho2Mn2O7. Journal of Applied Physics, 79(8), 6173-6175. https://doi.org/10.1063/1.362063