Nuclear order in copper: New type of antiferromagnetism in an ideal fcc system

A.J. Annila, K.N. Clausen, P-A. Lindgård, O.V. Lounasmaa, A.S. Oja, K. Siemensmeyer, M. Steiner, J.T. Tuoriniemi, H. Weinfurter

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    A new ordering vector k=(2π/a)(0, 2/3, 2/3) for fcc antiferromagnets has been found by neutron-diffraction experiments at nanokelvin temperatures in the nuclear-spin system of a 65Cu single crystal. The corresponding reflection together with the previously observed (100) Bragg peak show the presence of three antiferromagnetic phases, separated by two first-order phase transitions, as the external magnetic field is varied between zero and Bc=0.25 mT. The kinetics of the transitions was observed to be on the order of seconds.

    © 1990 The American Physical Society
    Original languageEnglish
    JournalPhysical Review Letters
    Volume64
    Issue number12
    Pages (from-to)1421-1424
    ISSN0031-9007
    DOIs
    Publication statusPublished - 1990

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