Effects of varying composition on magnetic properties of Cantor alloys

ORAL

Abstract

Magnetic and transport properties of CrMnFeCoNi high-entropy alloys were examined between 5 K and 300 K and in fields up to 9 T. The alloy composition was varied by adjusting the relative amount of one element while leaving equal amounts of the others, leading to compositions such as Mnx(CrFeCoNi)1-x. Several magnetic signatures are identified, including one associated with a ferromagnetic transition near 43 K, which is relatively independent of composition, leading to questions of whether it is an intrinsic or extrinsic (impurity) feature. Using least squares fitting for over 30 samples, the local magnetism from each element is approximated, thereby allowing the composition of a near-zero net moment alloy to be identified.

*Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under Contract No.~DE-NA0003525. The views expressed in this article do not necessarily represent the views of the U.S. Department of Energy or the United States Government. Support from NSF via DMR-1708410 (MWM), DMR-1644779 (MagLab) and the State of Florida.

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Presenters

  • Timothy A Elmslie

    • University of Florida

Authors

  • Timothy A Elmslie

    • University of Florida

  • Sujeily Soto-Medina

    • University of Florida

  • Jacob Startt

    • Sandia National Laboratories

  • Mark W Meisel

    • University of Florida, National High Magnetic Field Laboratory
    • University of Florida

  • Michele V Manuel

    • University of Florida

  • Remi Dingreville

    • Sandia National Laboratories

  • James J Hamlin

    • University of Florida
    • Department of Physics, University of Florida