Search results for: STOPY AKTYNOWCÓW

• 237Np Mössbauer effect study on NpFeAsO

  Publication

  • P. Gaczyński
  • T. Klimczuk
  • H. Walker
  • R. Springell
  • E. Colineau
  • R. Eloirdi
  • J. Griveau
  • R. Caciuffo

  - JOURNAL OF PHYSICS-CONDENSED MATTER - Year 2014

  We report 237Np Mössbauer measurements on NpFeAsO. The Np atoms were found to occupy only one crystallographic site. The value of the isomer shift (δ ∼ 9.1 mm s−1 versus NpAl2) indicates a 5f4 electronic configuration (Np3+ ions). The magnetic ordering of the Np sublattice below 60 K is established and the saturated ordered magnetic moment is determined to be 1.73μB at 3.6 K. The unique set of hyperfine parameters exclude a modulated...

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• Magnetic properties of ferromagnetic Pu2Pt3Si5

  Publication

  • J. Griveau
  • E. Colineau
  • D. Bouxiere
  • K. Gofryk
  • T. Klimczuk
  • J. Rebizant

  - JOURNAL OF ALLOYS AND COMPOUNDS - Year 2013

  The structural, magnetic, and thermodynamic properties of a new plutonium based compound, Pu2Pt3Si5, are reported. Single crystals produced by a Sn-flux technique have been analyzed showing a ferromagnetic behavior at 58 K. Pu2Pt3Si5 crystallizes in the U2Co3Si5-type orthorhombic Iabm structure (s.g. 72) with atomic parameters a = 9.9226(2) Å, b = 11.4436(2) Å and c = 6.0148(1) Å. The effective (leff 0.74 lB/Pu) and saturated (rsat...

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