Observation of a G-type short range antiferromagnetic order in expanded FeS

ORAL

Abstract

We report structural studies on FeS single crystals obtained from RbxFe2-yS2 using a hydrothermal method. Neutron diffraction measurements show the iron vacancy order and block antiferromagnetic order in RbxFe2-yS2 are absent in the samples. Interestingly, a G-type short range antiferromagnetic order with moments aligned along the c-axis is observed. Its Neel temperature is determined at 165 K. The data reveal that the short range antiferromagnetic order corresponds to expended inter-layer space of FeS. Our results indicate that FeS is in the vicinity of a magnetically ordered ground state and provide insights on understanding a variety of phenomena observed on FeS and ongoing research on the iron chalcogenide FeSe1-xSx system.

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Presenters

  • Meng Wang

    School of Physics, Sun Yat-Sen University

Authors

  • Meng Wang

    School of Physics, Sun Yat-Sen University

  • Ming Yi

    Physics Department, University of California at Berkeley, Physics, University of California, Berkeley, Univ of California - Berkeley, University of California - Berkeley, University of California

  • Zhijun Xu

    NIST Center for Neutron Research, National Institute of Standards and Technology, NIST -Natl Inst of Stds & Tech, NIST Center for Neutron Research, National Institute of Standards and Technology

  • Huibo Cao

    Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge National Laboratory, Quantum Condensed Matter Division, Oak Ridge National Laboratory, Neutron Sciences Directorate, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Lab, Oak Ridge National Lab, Oak Ridge Natl Lab, Quantum Condensed Matter Division , Oak Ridge National Laboratory

  • E. Bourret-Courchesne

    Materials Science Division, Lawrence Berkeley National Laboratory, Lawrence Berkeley National Labratory

  • Jeffrey Lynn

    NIST Center for Neutron Research, NIST center for Neutron Research, NIST Center for Neutron Research, National Institute of Standards and Technology, National Institute of Standards and Technology, NIST, NCNR, NIST -Natl Inst of Stds & Tech

  • Robert Birgeneau

    Physics Department, University of California at Berkeley, Physics, University of California, Berkeley, UC Berkeley