Studies on Single Crystal CeCo3B2

ORAL

Abstract

Magnetization, resisitivity, and specific heat measurements, under pressure, on weak ferromagnet CeCo3B2 are reported. This hexagonal structure with space group P6/mmm (D$^{1}_{6h})$, and one formula unit per unit cell, forms in the CaCu$_{5}$-type structure. At ambient pressure, dc and ac susceptibility displayed an ordering below a T$_{curie}$ of $\sim $210K, with the highly anisotropic ordering along the c axis, which is weakly suppressed with the application of pressure(- 4 K/GPa). Along the ordering axis, the saturation moment, taking into account the linear behavior at higher fields, reaches only $\sim $0.01$\mu _{B}$ at 2K. This work was supported by NSF-DMR 0433560.

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Authors

  • Long Pham

    Department of Physics, University of California, Davis, California, 95616

  • Vladimir Sidorov

    Vereshchagin Institute of High Pressure Physics, 142190 Troitsk, Russia

  • J.C. Lashley

    Los Alamos National Laboratory

  • J.D. Thompson

    Los Alamos National Laboratory, Los Alamos, New Mexico 87545, Los Alamos National Laboratory

  • Han-oh Lee

  • Zach Fisk

    Department of Physics, University of California, Davis, California, 95616, UC Davis Physics, UC Davis