Itinerant electron metamagnetism in LaCo9Si4

Herwig Michor, M El-Hagary, Massimiliano Della Mea, Martin W. Pieper, Michael Reissner, Gerfried Hilscher, S Khmelevskyi, Peter Mohn, Günter Schneider, Gerald Giester, Peter Franz Rogl

Publications: Contribution to journalArticlePeer Reviewed

Abstract

The strongly exchange enhanced Pauli paramagnet LaCo9Si 4 is found to exhibit an itinerant metamagnetic phase transition with indications for metamagnetic quantum criticality. Our investigation comprises magnetic, specific heat, and nuclear magnetic resonance measurements as well as ab initio electronic structure calculations. The critical field is about 3.5 T for H||c and 6 T for H?c, which is the lowest value ever found for rare earth intermetallic compounds. In the ferromagnetic state there appears a moment of about 0.2 œB/Co at the 16k Co-sites, but significantly smaller moments at the 4d and 16l Co-sites.
Original languageEnglish
Pages (from-to)814041-814044
Number of pages4
JournalPhysical Review B
Volume69
Issue number8
DOIs
Publication statusPublished - 2004

Austrian Fields of Science 2012

  • 1051 Geology, Mineralogy

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