Physical Properties of Single Crystal EuIn$_{2}$P$_{2}$ and EuGa$_{2}$P$_{2}$

ORAL

Abstract

Single crystals of EuIn$_{2}$P$_{2}$ and EuGa$_{2}$P$_{2}$ have been grown by a metal flux method.$^{ }$The EuIn$_{2}$P$_{2}$ material crystallizes in a new hexagonal structure type and orders magnetically at 24 K. The magnetic ordering is anisotropic suggesting a possible canted ferromagnetic magnetic structure. The temperature dependent resistivity data indicate semi-metallic behavior. Negative colossal magnetoresistance is observed at the ordering temperature. The gallium metal analogue, EuGa$_{2}$P$_{2}$, crystallizes in a related monoclinic structure and magnetically orders at a slightly higher temperature. Magnetization, resistivity and specific heat data are presented for both compounds.

*This work is partially supported by NSF DMR-0433560 and DMR-0120990

Authors

  • Newell Jensen

  • Samuel MaQuilon

  • Peter Klavins

    • Department of Physics, University of California, Davis, California, 95616
  • Zach Fisk

    • Department of Physics, University of California, Davis, California, 95616
    • UC Davis Physics
    • UC Davis
  • Cathie Condron

    • Department of Chemistry, University of California, Davis, California, 95616
  • Jiong Jiang

  • Susan Kauzlarich

    • UC Davis Chemistry