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