Effects of Disorder on Monopole Crystallization in Nd2ScNbO7

ORAL

Abstract

The pyrochlore series Ln2ScNbO7 (Ln = rare earth) present an excellent means of investigating the effect of chemically induced disorder on the frustrated magnetic sublattice without altering the stoichiometry of the magnetic cations. The Nd2ScNbO7 member of this series acts as a structurally sound analogue to Nd2Zr2O7 which has attracted attention due to the experimental realization of simultaneous spin ice and Ising antiferromagnetic order signatures in neutron scattering experiments. This has been explained as magnetic charge fractionalization, leading to the condensation of magnetic monopoles. Here we report the synthesis and characterization of single crystalline Nd2ScNbO7, which orders magnetically beneath TN = 0.34 K. The magnetic ground state is compared to Nd2Zr2O7 (TN ~ 0.3 K) to observe the effects of B-site disorder on the magnetic fragmentation.

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Presenters

  • Cole Mauws

    Chemistry, University of Manitoba, University of Manitoba

Authors

  • Cole Mauws

    Chemistry, University of Manitoba, University of Manitoba

  • Haidong Zhou

    Physics and Astronomy, Univ of Tennessee, Knoxville, Physics and Astronomy, University of Tennessee Knoxville, Department of Physics and Astronomy, University of Tennessee, Department of Physics and Astronomy, University of Tennessee Knoxville, Department of Physics & Astronomy, University of Tennessee, University of Tennessee, Physics and Astronomy, University of Tennessee, Physics, University of Tennessee, Univ of Tennessee, Knoxville, Physics and Astronomy, University of Tennessee, knoxville, Dept. of Physics and Astronomy, University of Tennessee

  • Matthew Stone

    Oak Ridge National Laboratory, Oak Ridge National Lab, Oak Ridge National Laborator, Neutron scattering devision, Oak Ridge National Lab

  • Zahra-Sadat Yamani

    Canadian Nuclear Laboratories, Canadian Neutron Beam Centre

  • Christopher Wiebe

    Chemistry, University of Winnipeg, University of Winnipeg