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


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
Issue number1-2
StatePublished - Apr 28 2004
EventProceedings of the VI Latin American Workshop on Magnetism - Chihuahua, Mexico
Duration: Apr 7 2003Apr 11 2003

Bibliographical note

Funding Information:
This work was supported by the NSF (grant number: DMR-0094241) and the BES program of the US Department of Energy. The work of V. Sechovsky and K. Prokes is a part of the research program MSM 113200002 financed by the Department of Education of the Czech Republic.


  • Heavy fermions
  • Intermetallics
  • Neutron scattering/diffraction


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