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Ferrimagnetism in Fe-rich NbFe2

Haynes, T. D., Maskery, I., Butchers, M. W., Duffy, J. A., Taylor, J. W., Giblin, Sean, Utfeld, C., Laverock, J., Dugdale, S. B., Sakurai, Y., Itou, M., Pfleiderer, C., Hirschberger, M., Neubauer, A., Duncan, W. and Grosche, F. M. 2012. Ferrimagnetism in Fe-rich NbFe2. Physical Review B Condensed Matter and Materials Physics 85 (11) , 115137 -115142. 10.1103/PhysRevB.85.115137

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We report a study of the spin moment in single crystal Nb(1−y)Fe(2+y) with y=0.015 using spin-dependent Compton scattering in conjunction with ab initio electronic structure calculations. From the experiment, we find that the total spin moment is 0.245±0.004μB. Comparison of the measured spin density with theoretical results from linearized muffin-tin orbital calculations determines there to be a ferrimagnetic arrangement of Fe moments, with the 2a Fe site aligned antiparallel to the bulk moment. There is a small moment on the Nb site, also antiparallel to the net moment. The orbital moment has been determined to be 0.02±0.02μB.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 1098-0121
Last Modified: 04 Jun 2017 04:37

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