Ferrimagnetism in Fe-rich NbFe2

Haynes, T. D., Maskery, I., Butchers, M. W., Duffy, J. A., Taylor, J. W., Giblin, Sean ORCID: https://orcid.org/0000-0003-1876-8619, 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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Abstract

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:	21 Oct 2022 10:51
URI:	https://orca.cardiff.ac.uk/id/eprint/41519

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