Skip to main content
eScholarship
Open Access Publications from the University of California

UC Irvine

UC Irvine Previously Published Works bannerUC Irvine

Weak coupling magnetism in Ce4Pt12Sn25: a small exchange limit in the Doniach phase diagram.

  • Author(s): Lee, Han-Oh;
  • Kurita, Nobuyuki;
  • Ho, Pei-chun;
  • Condron, Cathie L;
  • Klavins, Peter;
  • Kauzlarich, Susan M;
  • Maple, MB;
  • Movshovich, R;
  • Bauer, ED;
  • Thompson, JD;
  • Fisk, Z
  • et al.
Abstract

Magnetic susceptibility, magnetization, specific heat, and electrical resistivity studies on single crystals of Ce4Pt12Sn25 reveal an antiferromagnetic transition at T(N) = 0.19 K, which develops from a paramagnetic state with a very large specific heat coefficient (C/T) of 14 J mol(-1) K(-2)-Ce just above T(N). On the basis of its crystal structure and these measurements, we argue that a weak magnetic exchange interaction in Ce4Pt12Sn25 is responsible for its low ordering temperature and a negligible Kondo-derived contribution to physical properties above T(N). The anomalous enhancement of specific heat above T(N) is suggested to be related, in part, to weak geometric frustration of f-moments in this compound.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View