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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 Rong, Chuanbing
dc.contributor.author Poudyal, Narayan
dc.contributor.author Chaubey, Girija Shankar
dc.contributor.author Nandwana, Vikas
dc.contributor.author Skomski, R.
dc.contributor.author Wu, Y.Q.
dc.contributor.author Kramer, Matthew J.
dc.contributor.author Liu, J. Ping
dc.date.accessioned 2010-08-09T19:28:58Z
dc.date.available 2010-08-09T19:28:58Z
dc.date.issued 2007-08-30 en_US
dc.identifier.citation J. Appl. Phys. 102, 043913 (2007) en_US
dc.identifier.issn 0021-8979 (print) en_US
dc.identifier.uri http://hdl.handle.net/10106/4987
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.language.iso en_US en_US
dc.publisher American Institute of Physics 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.publisher.department Department of Physics, The University of Texas at Arlington en_US
dc.identifier.externalLink http://link.aip.org/link/JAPIAU/v102/i4/p043913/s1 en_US
dc.identifier.externalLinkDescription External link to the published article en_US

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