Weakly canted antiferromagnetic order in the distorted kagome lattice: Y<sub>2</sub>Co<sub>3</sub>

ORAL

Abstract

We report on the physical properties of a new antiferromagnet Y2Co3 with distorted kagome lattice. We developed a solution-growth based method to synthesize single crystals of Y2Co3 and characterize its magnetic properties, magnetic phase diagram and magnetic structure. We find that Y2Co3 crystallizes in the La2Ni3-type orthorhombic structure with space group Cmce (No.64), with Co forming distorted kagome layers. Y2Co3 orders antiferromagnetically below TN = 252 K. Magnetization measurements reveal that the moments are primarily aligned along the b axis with evidence for some canting. Single crystal neutron diffraction was used to determine the magnetic structure. It confirms the major magnetic component along the b axis but did not observe the canted magnetic component. We discuss the magnetic and structural behaviors in the distorted kagome lattice and the discrepancy between the bulk measurement and neutron diffraction.

Reference: Y. Shi, D. S. Parker, E. S. Choi, K. P. Devlin, L. Yin, J. Zhao, P. Klavins, S. M. Kauzlarich, and V. Taufour, Phys. Rev. B 104, 184407 (2021).

*We acknowledge support from the UC Lab Fees Research Program (LFR-20-653926), NSF DMR-1709382, -2001156, -1644779, -1157490, -1164477, the State of Florida, US DOE BES-MSE, US DOE BES project 'Science at 100 tesla'. Single crystal neutron experiment used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by Oak Ridge National Laboratory.

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Publication: Y. Shi, D. S. Parker, E. S. Choi, K. P. Devlin, L. Yin, J. Zhao, P. Klavins, S. M. Kauzlarich, and V. Taufour, Phys. Rev. B 104, 184407 (2021).

Presenters

  • Yunshu Shi

    • University of California, Davis

Authors

  • Yunshu Shi

    • University of California, Davis

  • Huibo Cao

    • Oak Ridge National Lab
    • Oak Ridge National Laboratory

  • Eun S Choi

    • National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee,USA.
    • National High Magnetic Field Laboratory
    • Florida State University

  • Neil Harrison

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Kasey P Devlin

    • University of California, Davis

  • David S Parker

    • Oak Ridge National Laboratory

  • Yin Li

    • Oak Ridge National Laboratory

  • Journey K Byland

    • University of California, Davis

  • Susan M Kauzlarich

    • University of California, Davis

  • Peter Klavins

    • University of California, Davis

  • Valentin Taufour

    • Department of Physics, University of California, Davis
    • University of California, Davis