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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    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
    Issue number8
    Pages (from-to)6173-6175
    Publication statusPublished - 1996
    Event40th Annual Conference on Magnetism and Magnetic Materials - Philadelphia, (PA), United States
    Duration: 6 Nov 19959 Nov 1995
    Conference number: 40


    Conference40th Annual Conference on Magnetism and Magnetic Materials
    CountryUnited States
    CityPhiladelphia, (PA)

    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.