Field evolution of magnetic correlations in ϵ-Co nanoparticle assemblies

Title:
Field evolution of magnetic correlations in ϵ-Co nanoparticle assemblies
Authors:
Sachan, M.; Bonnoit, C.; Majetich, S. A.; Ijiri, Yumi; Mensah-Bonsu, P. O.
Abstract:
Small-angle neutron scattering measurements of Co nanoparticle assemblies reveal three characteristic length scales associated with the interparticle and intraparticle magnetic orders. The first length scale stemming from particle size and separation does not vary with applied field. In contrast, the magnetic correlation length increases from 71±9nm in zero field at 5K to greater than 1000nm in fields larger than 0.2T. The random-field length scale decreases from 37±8nm when H=0to9.1±0.3nm in H=0.2T, and the contribution of this term is less significant in large fields.
Citation:
Sachan, M., C. Bonnoit, S. A. Majetich, Y. Ijiri, et al. 2008. "Field evolution of magnetic correlations in ϵ-Co nanoparticle assemblies." Applied Physics Letters 92.
Publisher:
American Institute of Physics
DATE ISSUED:
2008
Department:
Physics and Astronomy
Type:
article
PUBLISHED VERSION:
10.1063/1.2911736
PERMANENT LINK:
http://hdl.handle.net/11282/309627

Full metadata record

DC FieldValue Language
dc.contributor.authorSachan, M.en_US
dc.contributor.authorBonnoit, C.en_US
dc.contributor.authorMajetich, S. A.en_US
dc.contributor.authorIjiri, Yumien_US
dc.contributor.authorMensah-Bonsu, P. O.en_US
dc.date.accessioned2013-12-23T16:13:35Z-
dc.date.available2013-12-23T16:13:35Z-
dc.date.issued2008en
dc.identifier.citationSachan, M., C. Bonnoit, S. A. Majetich, Y. Ijiri, et al. 2008. "Field evolution of magnetic correlations in ϵ-Co nanoparticle assemblies." Applied Physics Letters 92.en_US
dc.identifier.issn0003-6951en_US
dc.identifier.urihttp://hdl.handle.net/11282/309627-
dc.description.abstractSmall-angle neutron scattering measurements of Co nanoparticle assemblies reveal three characteristic length scales associated with the interparticle and intraparticle magnetic orders. The first length scale stemming from particle size and separation does not vary with applied field. In contrast, the magnetic correlation length increases from 71±9nm in zero field at 5K to greater than 1000nm in fields larger than 0.2T. The random-field length scale decreases from 37±8nm when H=0to9.1±0.3nm in H=0.2T, and the contribution of this term is less significant in large fields.en_US
dc.publisherAmerican Institute of Physicsen_US
dc.identifier.doi10.1063/1.2911736-
dc.subject.departmentPhysics and Astronomyen_US
dc.titleField evolution of magnetic correlations in ϵ-Co nanoparticle assembliesen_US
dc.typearticleen_US
dc.identifier.journalApplied Physics Lettersen_US
dc.subject.keywordNanoparticlesen_US
dc.subject.keywordMagnetic nanoparticlesen_US
dc.subject.keywordParticle scatteringen_US
dc.subject.keywordTransmission electron microscopyen_US
dc.subject.keywordNeutronsen_US
dc.identifier.volume92en_US
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