Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering

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Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering

Show simple item record Nandwana, Vikas Rong, Chuan-Bing Poudyal, Narayan Liu, J. Ping Saito, Tetsuji Wu, Yaqiao Kramer, Matthew J. 2010-10-13T19:14:46Z 2010-10-13T19:14:46Z 2007
dc.identifier.citation Published in the Journal of Applied Physics 101:09K515-1-09K5151-3 en_US
dc.identifier.issn 0021-8979
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 Department of Physics, University of Texas at Arlington. Department of Mechanical Science and Engineering, Chiba Institute of Technology. Ames Laboratory, Iowa State University. Department of Physics and Astronomy, Iowa State University. en_US
dc.language.iso en_US en_US
dc.publisher AIP en_US
dc.subject Fe and its alloys en_US
dc.subject Cermets, ceramic and refractory composites en_US
dc.subject Nanoscale materials and structures: fabrication and characterization en_US
dc.subject Plasma applications en_US
dc.subject Solid-solid transitions en_US
dc.subject Exchange and superexchange interactions en_US
dc.title Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering en_US
dc.type Article en_US
dc.identifier.externalLink en_US
dc.identifier.externalLinkDescription Link to Research Profiles en_US

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