Duffy, J. A., Taylor, J. W., Dugdale, S. B., Shenton-Taylor, C., Butchers, M. W., Giblin, S. R., Cooper, Malcolm, Sakurai, Y. and Itou, M. (2010) Spin and orbital moments in Fe3O4. Physical Review B (Condensed Matter and Materials Physics), Vol.81 (No.13). Article: 134424 . doi:10.1103/PhysRevB.81.134424

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Abstract

We report a study of the spin moment in Fe3O4 as a function of temperature using spin-dependent Compton scattering. Magnetic Compton profiles and spin moment values were obtained either side of the Verwey transition for applied magnetic fields of 2.5 and 7 T. The orbital moments, determined by comparison with bulk magnetometry, are almost fully quenched. No evidence of any anomalies in the spin or orbital moments at the Verwey transition was observed. The magnetic Compton profiles have the characteristic shape for Fe 3d electrons at all temperatures with no changes in the degree of anisotropy across the Verwey transition. Our data are consistent with the highly spin-polarized electronic structure expected for bulk Fe3O4.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
ISSN:	1098-0121
Official Date:	1 April 2010
Dates:	Date Event 1 April 2010 Published
Volume:	Vol.81
Number:	No.13
Number of Pages:	5
Page Range:	Article: 134424
DOI:	10.1103/PhysRevB.81.134424
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC), ESRF
Grant number:	GR/S44211, EP/F021518 (EPSRC)

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