Structural, magnetic, thermal, and electronic transport properties of single-crystal EuPd2Sb2

S. Das, K. McFadden, Yogesh Singh, R. Nath, A. Ellern, and D. C. Johnston
Phys. Rev. B 81, 054425 – Published 17 February 2010

Abstract

Single crystals of EuPd2Sb2 have been grown from PdSb self-flux. The properties of the single crystals have been investigated by x-ray diffraction, magnetic susceptibility χ, magnetization M, electrical resistivity ρ, Hall coefficient RH, and heat capacity Cp measurements versus temperature T and magnetic field H. Single-crystal x-ray diffraction studies confirmed that EuPd2Sb2 crystallizes in the tetragonal CaBe2Ge2-type structure. The χ(T) measurements suggest antiferromagnetic ordering at 6.0 K with the easy axis or plane in the crystallographic ab plane. An additional transition occurs at 4.5 K that may be a spin reorientation transition. The Cp(T) data also show the two transitions at 6.1 and 4.4 K, respectively, indicating the bulk nature of the transitions. The 4.4 K transition is suppressed below 1.8 K while the 6.1 K transition moves down to 3.3 K in H=8T. The ρ(T) data show metallic behavior down to 1.8 K along with an anomaly at 5.5 K in zero field. The anomaly is suppressed to 2.7 K in an 8 T field. The RH measurements indicated that the dominant charge carriers are electrons. The M(H) isotherms show three field-induced transitions at 2.75, 3.90, and 4.2 T magnetic fields parallel to the ab plane at 1.8 K. No transitions are observed in M(H) for fields parallel to the c axis.

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  • Received 7 December 2009

DOI:https://doi.org/10.1103/PhysRevB.81.054425

©2010 American Physical Society

Authors & Affiliations

S. Das1, K. McFadden1, Yogesh Singh1, R. Nath1, A. Ellern2, and D. C. Johnston1

  • 1Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
  • 2Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA

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Issue

Vol. 81, Iss. 5 — 1 February 2010

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