Rare Earth Doping in the (Sr,Ca)Fe2As2 System

ORAL

Abstract

The (Sr,Ca)Fe2As2 system shows an unusual persistence of the Neel ordering temperature of $\sim $200 K up to a concentration of 70{\%} calcium. We present electrical transport, magnetic susceptibility and structural characterization data as a function of rare earth substitution into Sr0.3Ca0.7Fe2As2 single crystals, focusing on the resultant phase diagram and the comparisons of solubility limit of rare earth substitution as compared to end members SrFe2As2 and CaFe2As2.

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Authors

  • Tyler Drye

    Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park, Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742

  • Shanta Saha

    Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park, Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742, Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland

  • Peter Zavalij

    Department of Chemistry, University of Maryland-College Park

  • Johnpierre Palione

    University of Maryland, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland-College Park, Center for Nanophysics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, MD 20742, University of Maryland, College Park, Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, Maryland 20742, USA, Center for Nanophysics and Advanced Materials, Physics Dept., University of Maryland, Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland