| Literature DB >> 20867056 |
K L Krycka1, R A Booth, C R Hogg, Y Ijiri, J A Borchers, W C Chen, S M Watson, M Laver, T R Gentile, L R Dedon, S Harris, J J Rhyne, S A Majetich.
Abstract
A new development in small-angle neutron scattering with polarization analysis allows us to directly extract the average spatial distributions of magnetic moments and their correlations with three-dimensional directional sensitivity in any magnetic field. Applied to a collection of spherical magnetite nanoparticles 9.0 nm in diameter, this enhanced method reveals uniformly canted, magnetically active shells in a nominally saturating field of 1.2 T. The shell thickness depends on temperature, and it disappears altogether when the external field is removed, confirming that these canted nanoparticle shells are magnetic, rather than structural, in origin.Entities:
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Year: 2010 PMID： 20867056 DOI： 10.1103/PhysRevLett.104.207203
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161