Magnetic Properties of Ln<sub>2</sub>CoIrO<sub>6</sub>

ORAL

Abstract

Magnetic materials containing 5d ions in oxygen cages can show exotic properties due to competing energy scales for spins, orbits, and the crystalline lattice. So far, the A2BB′O6 double perovskites have shown a wide range of magnetic and multiferroic properties. We focus on the magnetic properties of A-site magnetic iridates Ln2CoIrO6 (Ln = Eu, Ho, Tb), which are unusual in that they have three magnetic elements. The Ln2CoIrO6 polycrystals show hysteretic and ferrimagnetic/ferromagnetic behavior, with extremely large magnetic moments on the Ho and Tb compounds. The phase diagrams extend past 60 Tesla. We will also present a magnetostriction technique using a piezoelectric strain gauge that is suited to ultrasensitive measurements on small samples in high magnetic fields on these and other compounds.

*A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-1157490, the State of Florida and the United States Department of Energy.

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Presenters

  • Xiaxin Ding

    • Los Alamos National Laboratory
    • NHMFL-LANL

Authors

  • Xiaxin Ding

    • Los Alamos National Laboratory
    • NHMFL-LANL

  • John Singleton

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory
    • Los Alamos National Lab NHMFL
    • NHMFL-LANL
    • NHMFL at Los Alamos National Lab
    • NHMFL, Los Alamos Natl Lab
    • NHMFL - Los Alamos

  • Jaewook Kim

    • Rutgers University
    • Physics, Rutgers Univesity
    • Department of Physics & Astronomy , Rutgers University

  • Sang-Wook Cheong

    • Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, Rutgers, The State University of New Jersey
    • Physics, Rutgers University
    • Physics and Astronomy, Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University
    • Physics and Astronomy, Rutgers Univ.
    • Rutgers Univ
    • Physics, Rutgers Univesity
    • Department of Physics, Rutgers University
    • Physics and Astronomy, Rutgers Center for Emergent Materials
    • Department of Physics & Astronomy , Rutgers University

  • Yi-Sheng Chai

    • Institute of Physics
    • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

  • Young Sun

    • Institute of Physics
    • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

  • Vivien Zapf

    • Los Alamos National Laboratory
    • NHMFL, Los Alamos Natl Lab