Is the Low-Temperature Phase in CePd$_{3}$Ga$_{8}$ Fascinating or Just Novel?

ORAL

Abstract

Magnetization data for CePd$_{3}$Ga$_{8}$ strongly support the presence of two phase transitions, also seen in specific heat, C$_{p}$. The 11 K transition (suppressed for fields, B$>$3 T) has similarities to UCd$_{11}$ and CeAuSb$_{2}$, but the lower temperature phase (T$<$6 K, B$<$2.5 T) is novel and its nature is a mystery. Its uniaxial magnetic anisotropy implies that CePd$_{3}$Ga$_{8}$ is an effective Ising system for the Ce spins, likewise consistent with C$_{p}$. The phase diagram of this fascinating material will be discussed in terms of combined magnetization, conductivity, C$_{p}$ and neutron scattering data.

Authors

  • K. E. Gray

    Argonne National Laboratory

  • John Mitchell

    Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave, Argonne IL 60439, Mat. Sci. Div., ANL, Argonne National Laboratory, Materials Science Division, Argonne National Laboratory, LANL, Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA, Argonne Natl Lab, Materials Science Division, Argonne National Laboratory, Argonne, IL, Argonne National Lab

  • Helmut Claus

    Argonne National Laboratory

  • Q. Li

    Argonne National Laboratory

  • Robin Macaluso

    Northern Colorado University, Northern Colorado College