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

Han Oh Lee, Nobuyuki Kurita, Pei Chun Ho, Cathie L. Condron, Peter Klavins, Susan M. Kauzlarich, M. B. Maple, R. Movshovich, E. D. Bauer, J. D. Thompson, Z. Fisk

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Magnetic susceptibility, magnetization, specific heat, and electrical resistivity studies on single crystals of Ce4Pt12Sn 25 reveal an antiferromagnetic transition at TN = 0.19K, which develops from a paramagnetic state with a very large specific heat coefficient (C/T) of 14Jmol-1K-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 Ce4Pt 12Sn25 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 TN is suggested to be related, in part, to weak geometric frustration of f-moments in this compound.

Original languageEnglish (US)
Article number065601
JournalJournal of Physics Condensed Matter
Volume22
Issue number6
DOIs
StatePublished - 2010

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Magnetism
Specific heat
Phase diagrams
phase diagrams
specific heat
Exchange interactions
frustration
Magnetic susceptibility
Magnetization
Physical properties
physical properties
Crystal structure
Single crystals
moments
magnetic permeability
magnetization
electrical resistivity
crystal structure
augmentation
single crystals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Lee, H. O., Kurita, N., Ho, P. C., Condron, C. L., Klavins, P., Kauzlarich, S. M., ... Fisk, Z. (2010). Weak coupling magnetism in Ce4Pt12Sn25: A small exchange limit in the Doniach phase diagram. Journal of Physics Condensed Matter, 22(6), [065601]. https://doi.org/10.1088/0953-8984/22/6/065601

Weak coupling magnetism in Ce4Pt12Sn25 : A small exchange limit in the Doniach phase diagram. / Lee, Han Oh; Kurita, Nobuyuki; Ho, Pei Chun; Condron, Cathie L.; Klavins, Peter; Kauzlarich, Susan M.; Maple, M. B.; Movshovich, R.; Bauer, E. D.; Thompson, J. D.; Fisk, Z.

In: Journal of Physics Condensed Matter, Vol. 22, No. 6, 065601, 2010.

Research output: Contribution to journalArticle

Lee, HO, Kurita, N, Ho, PC, Condron, CL, Klavins, P, Kauzlarich, SM, Maple, MB, Movshovich, R, Bauer, ED, Thompson, JD & Fisk, Z 2010, 'Weak coupling magnetism in Ce4Pt12Sn25: A small exchange limit in the Doniach phase diagram', Journal of Physics Condensed Matter, vol. 22, no. 6, 065601. https://doi.org/10.1088/0953-8984/22/6/065601
Lee, Han Oh ; Kurita, Nobuyuki ; Ho, Pei Chun ; Condron, Cathie L. ; Klavins, Peter ; Kauzlarich, Susan M. ; Maple, M. B. ; Movshovich, R. ; Bauer, E. D. ; Thompson, J. D. ; Fisk, Z. / Weak coupling magnetism in Ce4Pt12Sn25 : A small exchange limit in the Doniach phase diagram. In: Journal of Physics Condensed Matter. 2010 ; Vol. 22, No. 6.
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