Magnetic Field Induced Phase Transition in Spinel GeNi<sub>2</sub>O<sub>4</sub>

ORAL

Abstract

Cubic spinel GeNi2O4 exhibits intriguing magnetic properties with two successive antiferromagnetic phase transitions (~12 and 11 K) in the absence of structural distortion. By means of heat capacity and magnetic susceptibility measurements, we have revealed a new magnetic phase in presence of magnetic field field (≥ 4 T) along the [111] direction, which is not observed when the magnetic field is applied along the [100] and [110] directions. Neutron powder diffraction measurements confirm such a field-induced phase transition and suggest it be ascribed to a spin reorientation in presence of magnetic field. We will discuss the potential mechanisms regarding such a peculiar magnetic anisotropy in this cubic system.

*Work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Award No. DE-SC0019259.

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Presenters

  • Tathamay Basu

    • Michigan State Univ

Authors

  • Tathamay Basu

    • Michigan State Univ

  • Tao Zou

    • Michigan State Univ

  • Z Dun

    • Michigan State Univ

  • Clarina Reloj Dela Cruz

    • Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Lab
    • SNS, Oak Ridge National Laboratory

  • Tao Hong

    • Oak Ridge National Lab
    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Oak Ridge National Lab, Neutron Scattering Division

  • Huibo Cao

    • Oak Ridge National Lab
    • Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
    • Neutron Scattering Division, Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
    • Oak Ridge Natl Lab

  • Mengze Zhu

    • Michigan State Univ
    • Univ of Bristol

  • Haidong Zhou

    • University of Tennessee
    • Department of Physics and Astronomy, University of Tennessee, Knoxville
    • University of Knoxville, Tennessee
    • Department of Physics & Astronomy, University of Tennessee
    • University of Tennesse, Knoxville
    • Physics and anstronomy, University of Tennessee
    • Department of Physics, University of Tennessee
    • Physics, University of Tennessee, Knoxville
    • University of Tennessee, Knoxville

  • Xianglin Ke

    • Michigan State Univ