Magnetic anisotropy in thin films of Prussian blue analogues

D. M. Pajerowski, J. E. Gardner, M. J. Andrus, S. Datta, A. Gomez, S. W. Kycia, S. Hill, D. R. Talham, and M. W. Meisel
Phys. Rev. B 82, 214405 – Published 2 December 2010

Abstract

The magnetic anisotropy of thin (200nm) and thick (2μm) films and of polycrystalline (diameters 60nm) powders of the Prussian blue analogue Rb0.7Ni4.0[Cr(CN)6]2.9nH2O, a ferromagnetic material with Tc70K, have been investigated by magnetization, ESR at 50 and 116 GHz, and variable-temperature x-ray diffraction (XRD). The origin of the anisotropic magnetic response cannot be attributed to the direct influence of the solid support but the film growth protocol that preserves an organized two-dimensional film is important. In addition, the anisotropy does not arise from an anisotropic g tensor nor from magnetolattice variations above and below Tc. By considering effects due to magnetic domains and demagnetization factors, the analysis provides reasonable descriptions of the low- and high-field data, thereby identifying the origin of the magnetic anisotropy.

    • Received 7 October 2010

    DOI:https://doi.org/10.1103/PhysRevB.82.214405

    ©2010 American Physical Society

    Authors & Affiliations

    D. M. Pajerowski1, J. E. Gardner2, M. J. Andrus2, S. Datta3, A. Gomez4, S. W. Kycia4, S. Hill3, D. R. Talham2, and M. W. Meisel1

    • 1Department of Physics and the National High Magnetic Field Laboratory, University of Florida, Gainesville, Florida 32611-8440, USA
    • 2Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA
    • 3National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, Florida 32310-3706, USA
    • 4Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1

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    Issue

    Vol. 82, Iss. 21 — 1 December 2010

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