dc.contributor.author | Nandwana, Vikas | |
dc.contributor.author | Rong, Chuan-Bing | |
dc.contributor.author | Chaubey, Girija S. | |
dc.contributor.author | Skomski, R | |
dc.contributor.author | Wu, Y.Q. | |
dc.contributor.author | Kramer, M.J. | |
dc.contributor.author | Liu, J. Ping | |
dc.date.accessioned | 2010-10-14T18:23:22Z | |
dc.date.available | 2010-10-14T18:23:22Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Published in the Journal of Applied Physics 102:043913-1-043913-4 | en_US |
dc.identifier.issn | 0021-8979 | |
dc.identifier.uri | http://hdl.handle.net/10106/5084 | |
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.description.sponsorship | Department of Physics, The University of Texas at Arlington. Center for Materials Research and Analysis, and Department of Physics and Astronomy, University of Nebraska. Ames Laboratory and Department of Materials Science and Engineering, Iowa State University | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AIP | 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.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 |