Hyperfine Interactions

, Volume 31, Issue 1–4, pp 403–405 | Cite as

First direct evidence for a magnetic phase transition in the heavy-electron system UCd11

  • S. Barth
  • H. R. Ott
  • F. Hulliger
  • F. N. Gygax
  • A. Schenck
  • T. M. Rice
Heavy Fermion Systems

Abstract

Muon-spin-rotation and relaxation measurements performed on polycrystalline UCd11 give first direct evidence for an antiferromagnetic phase transition at 5 K. As far as probed by the positive muon the behaviour close to the phase transition is clearly contrasted to that in other magnetic heavy-electron materials investigated by μ+SR, e.g. U2Zn17 and UCu5, because in UCd11 longitudinal field measurements reveal dynamic relaxation effects which are attributed to the critical slowing down of the uranium 5f-moments. No signal could be observed in the ordered regime because of a large dipolar field spread.

Keywords

Thin Film Phase Transition Uranium Direct Evidence Field Measurement 

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References

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    Z. Fisk, G.R. Stewart, J.O. Willis, H.R. Ott, and F. Hulliger, Phys. Rev.B30, 6360 (1984).CrossRefADSGoogle Scholar
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    S. Barth, F.N. Gygax, H.R. Ott, T.M. Rice, and A. Schenck (contribution to this conference)Google Scholar

Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1986

Authors and Affiliations

  • S. Barth
    • 1
  • H. R. Ott
    • 1
  • F. Hulliger
    • 1
  • F. N. Gygax
    • 2
  • A. Schenck
    • 2
  • T. M. Rice
    • 3
  1. 1.Laboratorium für FestkörperphysikETH ZürichZürichSwitzerland
  2. 2.Institut für MittelenergiephysikETH Zürich, c/o SINVilligenSwitzerland
  3. 3.Institut für Theoretische PhysikETH ZürichZürichSwitzerland

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