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Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles

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Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles

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dc.contributor.author Nandwana, Vikas
dc.contributor.author Rong, Chuan-bing
dc.contributor.author Chaubey, Girija S.
dc.contributor.author Skomski, R
dc.contributor.author Wu, Y.Q.
dc.contributor.author Kramer, M.J.
dc.contributor.author Liu, J. Ping
dc.date.accessioned 2010-10-14T18:23:22Z
dc.date.available 2010-10-14T18:23:22Z
dc.date.issued 2007
dc.identifier.citation Published in the Journal of Applied Physics 102:043913-1-043913-4 en_US
dc.identifier.issn 0021-8979
dc.identifier.uri http://hdl.handle.net/10106/5084
dc.description.abstract FePt nanoparticles with a size of 3 nm and thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles were prepared by chemical synthesis and a salt-matrix annealing technique. Structural and magnetic characterizations confirmed the phase transition from the disordered face-centered cubic structure to the L10 structure with the chemical ordering parameter of 0.62±0.05. Analysis in blocking temperature and fitting of temperature dependence of switching field reveals that the transformed 3 nm nanoparticles have a magnetic anisotropy constant of (2.8±0.2)×106 J/m3, smaller than those for the bigger particles and the fully ordered L10 bulk phase. en_US
dc.description.sponsorship Department of Physics, The University of Texas at Arlington. Center for Materials Research and Analysis, and Department of Physics and Astronomy, University of Nebraska. Ames Laboratory and Department of Materials Science and Engineering, Iowa State University en_US
dc.language.iso en_US en_US
dc.publisher AIP en_US
dc.subject annealing en_US
dc.subject crystal structure en_US
dc.subject ferromagnetic materials en_US
dc.subject iron alloys en_US
dc.subject magnetic anisotropy en_US
dc.subject magnetic particles en_US
dc.subject nanoparticles en_US
dc.subject platinum alloys en_US
dc.subject solid-state phase transformations en_US
dc.title Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles en_US
dc.type Article en_US
dc.identifier.externalLink http://www.uta.edu/ra/real/editprofile.php?onlyview=1&pid=1866 en_US
dc.identifier.externalLinkDescription Link to Research Profiles en_US

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