Delocalization of the U 5f magnetic moments in U(In0.6Sn 0.4)3 and UNiSn under high pressure

A. Barla, J. P. Sanchez, A. Aksungur, R. Lengsdorf, J. Plessel, B. P. Doyle, R. Rüffer, M. M. Abd-Elmeguid

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1 Citation (Scopus)

Abstract

The pressure-temperature dependence of the electronic and magnetic properties of the compounds U(In1-xSnx)3 and UNiSn has been investigated by means of high pressure x-ray diffraction, 119Sn nuclear forward scattering (NFS) of synchrotron radiation and Mössbauer spectroscopy (MS) measurements. We show that pressure has different effects on these systems: while U(In0.8Sn 0.2)3 shows some of the typical properties of nearly localized 5f systems, pressure induces the delocalization of the U 5f electrons in U(In0.6Sn0.4)3 and UNiSn with a pressure dependent interplay between RKKY exchange interaction and the consequent collapse of the magnetic order. These results are discussed in terms of hybridization between U 5f electrons and conduction band electrons such as U 6d, Sn/In 5sp and Ni 3d electrons.

Original languageEnglish
Pages (from-to)S859-S870
JournalJournal of Physics Condensed Matter
Volume17
Issue number11
DOIs
Publication statusPublished - 23 Mar 2005
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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