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
© 1990 The American Physical Society
Original language | English |
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Journal | Physical Review Letters |
Volume | 64 |
Issue number | 12 |
Pages (from-to) | 1421-1424 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 1990 |