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Evidence for a Spin Emulsion

Bentley, P. M. and Cywinski, R. (2008) Evidence for a Spin Emulsion. Physical Review Letters, 101 (22). pp. 227202-22706. ISSN 00319007

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Magnetic small-angle neutron scattering from the itinerant electron magnet, Y(Mn1-xFex)2, in which ferromagnetic and antiferromagnetic spin correlations compete, is found to follow an anomalous Q-6 dependence (Q=4sin/). It is suggested that this scattering is the magnetic analogue of that predicted for a structural microemulsion by Teubner's extension of conventional Kirste-Porod scattering to well-defined interfaces with extreme differences between mean and Gaussian curvatures. The “spin-emulsion-like” morphology of magnetic interfaces in Y(Mn1-xFex)2 is confirmed both qualitatively and quantitatively by a simple model based upon reported near neighbor Mn and Fe spin correlations

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sara Taylor
Date Deposited: 19 Feb 2009 14:32
Last Modified: 28 Aug 2021 10:44


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