Effect of temperature on hybridization and magnetism in U 2Pd2Sn and U2Ni2In

H. Nakotte, S. El-Khatib, A. Christianson, R. B. Von Dreele, K. Prokes, V. Sechovsky, L. C.J. Pereira, J. C. Spirlet, J. Rebizant

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

We report on the temperature variation of the interatomic distances in isostructural U2Ni2In and U2Pd2Sn, both of which order antiferromagnetically at low temperatures. Both compounds exhibit complex non-collinear arrangements of the magnetic moments confined to the tetragonal basal plane, which is perpendicular to the shortest interuranium distance along the c-axis at low temperatures. The different temperature dependencies of the shortest interatomic links between uranium and the transition metal (Ni or Pd) provide evidence for the dual nature of 5f-d hybridization in these two compounds. We argue that magnetic ordering in U 2Pd2Sn arises due to increased 5f-d hybridization (promoting stronger exchange) while the reduced hybridization in U 2Ni2In allows for the formation of stable U magnetic moments.

Original languageEnglish (US)
Pages (from-to)273-276
Number of pages4
JournalJournal of Alloys and Compounds
Volume369
Issue number1-2
DOIs
StatePublished - Apr 28 2004
EventProceedings of the VI Latin American Workshop on Magnetism - Chihuahua, Mexico
Duration: Apr 7 2003Apr 11 2003

Keywords

  • Heavy fermions
  • Intermetallics
  • Neutron scattering/diffraction

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