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    Coupled Magnetic and Ferroelectric Domains in Multiferroic Ni3V2O8

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    Broholm Coupled 2009.pdf (378.2Kb)
    Date
    2009-08-21
    Author
    Chen, W. C.
    Kenzelmann, M.
    Gentile, T. R.
    Chen, Y.
    Cabrera, I.
    Rogado, N.
    Lawes, G.
    Broholm, C.
    Lynn, J. W.
    Erwin, R.
    Cava, R.J.
    Leao, J. B.
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    Abstract
    Electric control of multi-ferroic domains is demonstrated through polarized magnetic neutron diffraction. Cooling to the cycloidal multi-ferroic phase of Ni3V2O8 in an electric field E causes the incommensurate Bragg reflections to become neutron spin polarizing, the sense of neutron polarization reversing with E. Quantitative analysis indicates the E-treated sample has a handedness that can be reversed by E. We further show a close association between cycloidal and ferroelectric domains through E-driven spin and electric polarization hysteresis. We suggest that a definite cycloidal handedness is achieved through magneto-elastically induced Dzyaloshinskii-Moriya interactions.
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    http://jhir.library.jhu.edu/handle/1774.2/33731
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