Heat Capacity and Neutron Scattering Studies on Geometrically Frustrated Ho Double Perovskites

ORAL

Abstract

We have studied the magnetic properties of the frustrated double perovskites A$_{2}$HoSbO$_{6}$ (A = Sr or Ba) by performing heat capacity measurements in applied magnetic field and inelastic neutron scattering. The Ho nuclear contribution to the heat capacity displays a unique field dependence that can be explained by the slowing down of the Ho electron spins in an applied field. The lowest magnetic level appears to be a doublet. Inelastic neutron scattering has conclusively determined the energy of these low lying crystalline electric field levels.

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Authors

  • Matthew Jacobsen

  • Daniel Antonio

  • Andrew Cornelius

  • Ravhi Kumar

    • University of Nevada, Las Vegas

  • Jason Gardner

    • Brookhaven National Laboratory \& NIST Center for Neutron Research
    • BNL and NIST

  • Yiming Qiu

    • NIST Center for Neutron Research \& University of Maryland

  • Cedomir Petrovic

    • Dept. Physics, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • BNL
    • Physics Department, Brookhaven National Laboratory