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The triple-Q-spin-density wave in the face-centred cubic antiferromagnetic Fe54Mn46 alloy

S Kawarazaki, Y Sasaki, K Yasuda, T Mizusaki and A Hirai

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The method of anisotropy measurement of gamma -ray emission from spin-polarised nuclei has been applied to the FCC Fe54Mn46 alloy to deduce the ground-state magnetic structure. Measurements were made at temperatures down to 240 mu K, and the observed anisotropy of the emission from 54Mn isotopes embedded in the single-crystal sample gives definitive evidence for the triple-Q spin-density wave in this material.


PACS

75.30.Fv Spin-density waves

71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

75.50.Ee Antiferromagnetics

75.25.+z Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 26 (2 July 1990)



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