Magnetic and multiferroic phases of single-crystalline Mn$_{1-x}$Co$_{x}$WO$_{4}$

ORAL

Abstract

The recent interest of MnWO$_{4}$ system is due to the strong correlation between the long-wavelength magnetic structure and the ferroelectric polarization. To understand the effects of Co substitutions on magnetic and multiferroic phases of MnWO$_{4}$, we studied the magnetic and dielectric properties of the single-crystalline Mn$_{1-x}$Co$_{x}$WO$_{4}$ compounds. At lower Co substitution, the commensurate (CM) AF1 phase was found suppressed but could be restored in external magnetic fields along b axis. We also observed the ferroelectric polarization along b axis suppressed by a b-axis magnetic field. On the other hand, the higher Co substitution such as 15{\%} showed more complex magnetic phases, which warrants future investigation. With Neutron scattering data, more detailed magnetic orders of the various phases would be revealed, and the relationship between magnetic phases and ferroelectric polarization will be discussed.

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Authors

  • K.-C. Liang

    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA

  • R.P. Chaudhury

    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA

  • Y.-Q. Wang

    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA

  • Y.Y. Sun

    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA

  • Bernd Lorenz

    • Department of Physics and TcSUH at the University of Houston
    • Department of Physics, TcSUH, University of Houston
    • Univ of Houston
    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA
    • Dept. of Physics and TcSUH, University of Houston

  • F. Ye

    • Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6393, USA

  • J.A. Fernandez-Baca

    • Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6393, USA

  • H.A. Mook

    • Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6393, USA

  • Paul C. W. Chu

    • Texas Center for Superconductivity at University of Houston and Department of Physics,Lawrence Berkeley National Laboratory
    • Department of Physics and TcSUH at the University of Houston; Lawrence Berkeley National Laboratory
    • Department of Physics, TcSUH, University of Houston and Lawrence Berkeley National Laboratory
    • Dept. of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5002
    • Univ of Houston
    • TCSUH and Department of Physics, University of Houston, Houston, Texas 77024-5002, USA
    • Department of Physics and TcSUH, University of Houston
    • Dept. of Physics and TcSUH, University of Houston
    • Texas Center for Superconductivity, University of Houston and Lawrence Berkeley National Laboratory