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dc.contributor.author | Rong, Chuan-Bing | |
dc.contributor.author | Liu, J. Ping | |
dc.date.accessioned | 2010-08-10T18:15:51Z | |
dc.date.available | 2010-08-10T18:15:51Z | |
dc.date.issued | 2007-06-01 | en_US |
dc.identifier.citation | Appl. Phys. Lett. 90 222504 (2007) | en_US |
dc.identifier.issn | 0003-6951 (print) | |
dc.identifier.uri | http://hdl.handle.net/10106/4994 | |
dc.description.abstract | Structural and magnetic properties of the FexPt100-x (x=78–88) alloys have been investigated. It is found that for all of the investigated compositions, a phase transition occurs from the disordered γ phase to the ordered α phase during cooling, while a reverse process takes place during heating. Moreover, magnetic fields also induce a phase transition from the γ phase to the α phase near the transition temperature. The temperature- and magnetic-field-induced phase transitions give rise to a huge negative thermal expansion and thus a giant magnetic entropy change (up to 39.8 J/kg K for the alloy with x=79). The contribution of the magnetic field induced phase transition to the total magnetic entropy change is estimated to be around 20%–25%. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | American Institute of Physics | en_US |
dc.subject | Magnetic transition temperature | en_US |
dc.subject | Iron alloys | en_US |
dc.subject | Platinum alloys | en_US |
dc.subject | Cooling | en_US |
dc.subject | Heat treatment | en_US |
dc.subject | Thermal expansion | en_US |
dc.subject | Entropy | en_US |
dc.subject | Magnetocaloric effects | en_US |
dc.subject | Ferromagnetic materials | en_US |
dc.title | Temperature- and magnetic-field-induced phase transitions in Fe-rich FePt alloys | 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/APPLAB/v90/i22/p222504/s1 | en_US |
dc.identifier.externalLinkDescription | External link to the published article | en_US |
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