Pressure dependance of the Curie temperature of TbNi$_2$Mn, investigated using designer diamond anvils

ORAL

Abstract

\\ TbNi$_2$Mn is a cubic Laves structured material with a Curie temperature at ambient pressure of $T_C=151$~K. The behavior of the Curie temperature has been investigated by AC magnetic susceptibility under both hydrostatic and non-hydrostatic conditions using designer diamonds up to 29~GPa, for which it was found to decrease at $dT_C/dP$=-2.0~K GPa$^{-1}$. However, non-hydrostatic conditions result in a flattening out of $T_C$ with pressure which is non-reservable.

*Work at LLNL was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory, under Contract No. W-7405-Eng-48.

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Authors

  • Damon Jackson

  • S.K. McCall

    • Lawrence Livermore National Laboratory

  • Samuel Weir

    • Lawrence Livermore National Laboratory

  • D.P. Young

    • Louisiana State University
    • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803

  • Qiu Wei

  • Yogesh Vohra

    • University of Alabama, Birmingham