Rapid thermal annealing of FePt nanoparticles

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Rapid thermal annealing of FePt nanoparticles

Show simple item record Nandwana, Vikas Yano, Kazuaki Poudyal, Narayan Rong, Chuan-Bing Liu, J. Ping 2010-10-26T20:33:43Z 2010-10-26T20:33:43Z 2008-07-01
dc.identifier.citation Published in Journal of Applied Physics 104:013918 en_US
dc.identifier.issn 0021-8979
dc.description.abstract We 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.sponsorship Department of Physics, University of Texas at Arlington en_US
dc.language.iso en_US en_US
dc.publisher AIP en_US
dc.subject coercive force en_US
dc.subject grain growth en_US
dc.subject iron alloys en_US
dc.subject nanoparticles en_US
dc.subject order-disorder transformations en_US
dc.subject platinum alloys en_US
dc.subject rapid thermal annealing en_US
dc.subject transmission electron microscopy en_US
dc.subject X-ray diffraction en_US
dc.title Rapid thermal annealing of FePt nanoparticles en_US
dc.type Article en_US
dc.identifier.externalLink en_US
dc.identifier.externalLinkDescription Link to Research Profiles en_US

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