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dc.contributor.authorNandwana, Vikas
dc.contributor.authorYano, Kazuaki
dc.contributor.authorPoudyal, Narayan
dc.contributor.authorRong, Chuan-Bing
dc.contributor.authorLiu, J. Ping
dc.date.accessioned2010-10-26T20:33:43Z
dc.date.available2010-10-26T20:33:43Z
dc.date.issued2008-07-01
dc.identifier.citationPublished in Journal of Applied Physics 104:013918en_US
dc.identifier.issn0021-8979
dc.identifier.urihttp://hdl.handle.net/10106/5102
dc.description.abstractWe report a systematic study on rapid thermal annealing (RTA) of FePt nanoparticles. FePt particles with an average size of 8 nm were synthesized by a chemical solution method, and then annealed using RTA and conventional furnace annealing (FA). It was observed that FePt nanoparticles can be transformed from disordered A1 phase to ordered L10 phase at 650 °C for 10 s using RTA, which is much shorter than the time needed for FA. The transmission electron microscopy and x-ray diffraction studies have revealed that the particle agglomeration and grain growth in the RTA treated samples are much less than in the FA treated samples. A linear correlation between the coercivity and the square root of the treatment time was observed in the RTA treated samples, which implies that the phase transition is related to atomic diffusion of Fe atoms from Fe-rich shells into the Pt-rich cores.en_US
dc.description.sponsorshipDepartment of Physics, University of Texas at Arlingtonen_US
dc.language.isoen_USen_US
dc.publisherAIPen_US
dc.subjectcoercive forceen_US
dc.subjectgrain growthen_US
dc.subjectiron alloysen_US
dc.subjectnanoparticlesen_US
dc.subjectorder-disorder transformationsen_US
dc.subjectplatinum alloysen_US
dc.subjectrapid thermal annealingen_US
dc.subjecttransmission electron microscopyen_US
dc.subjectX-ray diffractionen_US
dc.titleRapid thermal annealing of FePt nanoparticlesen_US
dc.typeArticleen_US
dc.identifier.externalLinkhttp://www.uta.edu/ra/real/editprofile.php?onlyview=1&pid=1866en_US
dc.identifier.externalLinkDescriptionLink to Research Profilesen_US


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