dc.contributor.author | Rong, Chuan-Bing | |
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 |