Evolution of Crystal Structure and Magnetism in Single-Crystal (Ba,Sr,Ca)Fe$_2$As$_2$ Solid Solutions

ORAL

Abstract

Superconductivity in the FeAs-based materials has motivated extensive studies of structural, magnetic and electronic properties of these systems. A common element of the 122 FeAs- based intermetallic series is the occurrence of a simultaneous structural and antiferromagnetic phase transition, which occurs at temperatures ranging between 130 K and 200 K in the Ba, Sr, and Ca-based parent compounds. We present a systematic study of the evolution of the magnetic and structural properties of solid solutions of these parent compounds obtained through electrical transport, magnetic susceptibility, x-ray and neutron scattering measurements of single-crystal samples, discussing the relation between magnetic order and structural aspects through the solid solution series.

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Authors

  • J. Paglione

    • University of Maryland, College Park
    • University of Maryland
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA
    • Center for Nanophysics and Advanced Materials, University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742
    • Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland
    • University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • K. Kirshenbaum

    • University of Maryland, Physics Department
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA
    • Center for Nanophysics and Advanced Materials, University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742
    • Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland
    • University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • S. Saha

    • University of Maryland, Physics Department
    • University of Maryland, College Park
    • Center for Nanophysics and Advanced Materials, University of Maryland
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742
    • Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland
    • University of Maryland, College Park, Center for Nanophysics and Advanced Materials

  • Nicholas Butch

    • University of Maryland, Physics Department
    • University of Maryland, College Park
    • UC San Diego
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA
    • Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland
    • University of Maryland

  • P.Y. Zavalij

    • Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742

  • B.G. Ueland

    • NIST Center for Neutron Research, National Institute for Standards and Technology, Gaithersburg, MD 20899
    • NIST Center for Neutron Research, National Institute of Standards and Technology

  • J.W. Lynn

    • NIST
    • National Institute of Standard and Technology
    • NIST Center for Neutron Research, National Institute for Standards and Technology, Gaithersburg, MD 20899