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Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering

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Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering

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dc.contributor.author Rong, Chuanbing
dc.contributor.author Nandwana, Vikas
dc.contributor.author Poudyal, Narayan
dc.contributor.author Liu, J. Ping
dc.contributor.author Saito, Tetsuji
dc.contributor.author Wu, Yaqiao
dc.contributor.author Kramer, Matthew J.
dc.date.accessioned 2010-08-11T19:51:14Z
dc.date.available 2010-08-11T19:51:14Z
dc.date.issued 2007-04-27 en_US
dc.identifier.citation J. Appl. Phys. 101, 09K515 (2007) en_US
dc.identifier.issn 0021-8979 (print)
dc.identifier.uri http://hdl.handle.net/10106/5014
dc.description PROCEEDINGS OF THE TENTH JOINT MMM/INTERMAG CONFERENCE / Hard Magnetic Materials en_US
dc.description.abstract FePt/Fe3Pt bulk nanocomposite magnets have been prepared by the spark plasma sintering of chemically synthesized FePt and Fe3O4 nanoparticles under 100 MPa at 400–600 °C. It was found that the phase transition of the FePt compound from the face centered cubic to the L10 started at 500 °C and was almost completed at 600 °C during the sintering. The activated atomic diffusion during the phase transition led to a significant increase in density. The density about 70% of the theoretical value has been obtained. Grain size of the sintered samples remains nanoscale even after a postannealing at 700 °C. Pressure rather than temperature was more effective in enhancing intergrain exchange coupling compared to temperature. en_US
dc.description.sponsorship Jointly sponsored by Physics Conferences, Inc. (AIP) and The IEEE Magnetics Society en_US
dc.language.iso en_US en_US
dc.publisher American Institute of Physics en_US
dc.subject iron alloys en_US
dc.subject platinum alloys en_US
dc.subject nanocomposites en_US
dc.subject ferromagnetic materials en_US
dc.subject nanotechnology en_US
dc.subject plasma materials processing en_US
dc.subject sintering en_US
dc.subject solid-state phase transformations en_US
dc.subject diffusion en_US
dc.subject grain size en_US
dc.subject exchange interactions (electron) en_US
dc.title Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering 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/v101/i9/p09K515/s1 en_US
dc.identifier.externalLinkDescription External link to the published article en_US

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