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dc.contributor.author | Nandwana, Vikas | |
dc.contributor.author | Rong, Chuan-Bing | |
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 | 2010-10-13T19:14:46Z | |
dc.date.available | 2010-10-13T19:14:46Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Published in the Journal of Applied Physics 101:09K515-1-09K5151-3 | en_US |
dc.identifier.issn | 0021-8979 | |
dc.identifier.uri | http://hdl.handle.net/10106/5081 | |
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 | 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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