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Effects of particle size and composition on coercivity of Sm–Co nanoparticles prepared by surfactant-assisted ball milling

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Effects of particle size and composition on coercivity of Sm–Co nanoparticles prepared by surfactant-assisted ball milling

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dc.contributor.author Poudyal, Narayan
dc.contributor.author Rong, Chuanbing
dc.contributor.author Liu, J. Ping
dc.date.accessioned 2010-08-11T18:43:48Z
dc.date.available 2010-08-11T18:43:48Z
dc.date.issued 2010-04-15 en_US
dc.identifier.citation J. Appl. Phys.107 09A703 (2010)
dc.identifier.issn 0021-8979 (print)
dc.identifier.uri http://hdl.handle.net/10106/5008
dc.description Proceedings of the 11th Joint MMM–Intermag Conference, 18–22 January 2010, Washington, DC, USA. Hard Magnetics Materials. en_US
dc.description.abstract The correlation between the recoil loop openness and the activation volume has been studied for the SmCo5/α-Fe nanocomposite powder material prepared by mechanical alloying. The α-Fe phase content in the nanocomposite powders was adjusted by varying the amount of α-Fe addition in raw materials and the postannealing temperature after mechanical alloying. It was found that the recoil loop openness increases with increasing α-Fe phase content. More interestingly, there is a linear relation between the openness of recoil loops and the reciprocal activation volume, indicating that the recoil loops are related to thermal fluctuation. The large open area of the recoil loops for nanocomposite magnets is attributed to the fact that low anisotropy in the α-Fe phase leads to unstable magnetization under thermal fluctuation. en_US
dc.description.sponsorship The American Institute of Physics (AIP) and the Magnetics Society of the IEEE in cooperation with The American Physical Society en_US
dc.language.iso en_US en_US
dc.publisher American Institute of Physics en_US
dc.subject ball milling en_US
dc.subject cobalt alloys en_US
dc.subject coercive force en_US
dc.subject hardening en_US
dc.subject hardness en_US
dc.subject magnetic particles en_US
dc.subject nanoparticles en_US
dc.subject particle size en_US
dc.subject samarium alloys en_US
dc.subject surfactants en_US
dc.title Effects of particle size and composition on coercivity of Sm–Co nanoparticles prepared by surfactant-assisted ball milling 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/v107/i9/p09A703/s1 en_US
dc.identifier.externalLinkDescription External link to the published article en_US

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