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Czechoslovak Journal of Physics

, Volume 52, Supplement 1, pp A249–A252 | Cite as

Investigation of the magnetic phase transition in U 3 Al 2 Si 3

  • M. Mihalik
  • S. Maťaš
  • M. Zentková
  • Z. Arnold
  • O. Mikulina
  • P. Rogl
Article

Abstract

A transition to magnetic ordered state has been investigated by AC-susceptibility measurements on a single crystal of U 3 Al 2 Si 3 at ambient pressure and at high pressure up to p=6.7 kbar. The transition to the magentic ordered state in U 3 Al 2 Si 3 is accompanied with a relatively wide double peak between T=25 K and T=50 K in AC-susceptibility data. A pronounced maximum at about T c1M =37 K and a local maximum at about T c2M =45 K are both shifted to lower temperatures by applied pressure with different pressure coefficients ∂T c1M/∂p=−0.9±0.1 K kbar−1 and ∂T c2M/∂p=−0.5±0.1 K kbar−1, respectively.

PACS

75.30.C 75.30.K 62.50.+p 

Key words

magnetic phase transition high pressure U3Al2Si3 

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Copyright information

© Institute of Physics, Academy of Sciences of the Czech Republic 2002

Authors and Affiliations

  • M. Mihalik
    • 1
  • S. Maťaš
    • 1
  • M. Zentková
    • 1
  • Z. Arnold
    • 2
  • O. Mikulina
    • 2
  • P. Rogl
    • 3
  1. 1.Institute of Experimental PhysicsSASKošiceSlovakia
  2. 2.Institute of PhysicsASCRPragueCzech Republic
  3. 3.Institute of Physical Chemistry University of ViennaViennaAustria

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