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Effect of spacer layer thickness on magnetic interactions in self-assembled single domain iron nanoparticles

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dc.contributorVirginia Tech. Department of Materials Science and Engineeringen
dc.contributorVirginia Tech. Department of Mechanical Engineeringen
dc.contributorNorth Carolina Agricultural and Technical State University. Department of Mechanical and Chemical Engineering. Center for Advanced Materials and Smart Structuresen
dc.contributorOak Ridge National Laboratory. Materials Science and Technology Divisionen
dc.contributor.authorHerndon, Nichole B.en
dc.contributor.authorOh, Sang Hoen
dc.contributor.authorAbiade, Jeremiah T.en
dc.contributor.authorPai, Devdasen
dc.contributor.authorSankar, Jagen
dc.contributor.authorPennycook, Stephen J.en
dc.contributor.authorKumar, Dhananjayen
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.date.accessed2015-04-24en
dc.date.accessioned2015-05-21T19:47:20Zen
dc.date.available2015-05-21T19:47:20Zen
dc.date.issued2008-04-01en
dc.description.abstractThe magnetic characteristics of iron nanoparticles embedded in an alumina thin film matrix have been studied as a function of spacer layer thickness. Alumina as well as iron nanoparticles were deposited in a multilayered geometry using sequential pulsed laser deposition. The role of spacer layer thickness was investigated by making layered thin film composites with three different spacer layer thicknesses (6, 12, and 18 nm) with fixed iron particle size of similar to 13 nm. Intralayer magnetic interactions being the same in each sample, the variation in coercivity and saturation magnetization is attributed to thickness dependent interlayer magnetic interactions of three types: exchange, strong dipolar, and weak dipolar. A thin film composite multilayer structure offers a continuously tunable strength of interparticle dipole-dipole interaction and is thus well suited for studies of the influence of interaction on the magnetic properties of small magnetic particle systems.en
dc.description.sponsorshipNational Science Foundation (U.S.). Nanoscale Interdisciplinary Research Team - Grant No. DMR-0403480en
dc.description.sponsorshipNorth Carolina Agricultural and Technical State University. Center for Advanced Materials and Smart Structuresen
dc.format.extent4 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHerndon, Nichole B., Oh, Sang Ho, Abiade, Jeremiah T., Pai, Devdas, Sankar, Jag, Pennycook, Stephen J., Kumar, Dhananjay (2008). Effect of spacer layer thickness on magnetic interactions in self-assembled single domain iron nanoparticles. Journal of Applied Physics, 103(7). doi: 10.1063/1.2833309en
dc.identifier.doihttps://doi.org/10.1063/1.2833309en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52405en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/103/7/10.1063/1.2833309en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectOzoneen
dc.subjectNanoparticlesen
dc.subjectIronen
dc.subjectPulsed laser depositionen
dc.subjectAluminiumen
dc.titleEffect of spacer layer thickness on magnetic interactions in self-assembled single domain iron nanoparticlesen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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