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Mechanism of the anomalous temperature dependence of coercivity in Sm(Co, Fe, Cu, Zr)z high temperature magnets

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Mechanism of the anomalous temperature dependence of coercivity in Sm(Co, Fe, Cu, Zr)z high temperature magnets

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dc.contributor.author Rong, Chuan-bing
dc.contributor.author Shen, Bao-gen
dc.contributor.author Zhang, Hong-wei
dc.contributor.author Liu, J. Ping
dc.date.accessioned 2010-11-01T16:38:08Z
dc.date.available 2010-11-01T16:38:08Z
dc.date.issued 2006
dc.identifier.citation Previously published in Applied Physics Letters en_US
dc.identifier.issn 0003-6951
dc.identifier.uri http://hdl.handle.net/10106/5103
dc.description.abstract Coercivity mechanism of the precipitation-hardened Sm Co,Fe,Cu,Zr z high-temperature magnets was found to vary with temperature by measurements of reversible magnetization. The magnetization reversal is mainly controlled by domain-wall pinning when temperature is lower than 800 K, while is mainly dominated by nucleation at higher temperature. It is interesting to find that the anomalous temperature dependence of coercivity Hc T near Curie temperature of the 1:5 phase is caused by the fast drop of intergranular exchange coupling. This mechanism can also explain the coercivity behavior that the anomalous Hc T tends to disappear with increasing z value. en_US
dc.description.sponsorship Department of Physics, University of Texas at Arlington; State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing, China en_US
dc.language.iso en en_US
dc.publisher AIP en_US
dc.subject curie tempearature en_US
dc.subject cobalt alloys en_US
dc.subject coercive force en_US
dc.subject copper alloys en_US
dc.subject exchange interactions (electron) en_US
dc.subject ferromagnetic materials en_US
dc.subject iron alloys en_US
dc.subject magnetic domain walls en_US
dc.subject magnetisation reversal en_US
dc.subject nucleation en_US
dc.subject precipitation en_US
dc.subject hardening en_US
dc.subject samarium alloys en_US
dc.subject zirconium alloys en_US
dc.title Mechanism of the anomalous temperature dependence of coercivity in Sm(Co, Fe, Cu, Zr)z high temperature magnets en_US
dc.type Article en_US
dc.identifier.externalLink https://www.uta.edu/ra/real/editprofile.php?onlyview=1&pid=1857 en_US
dc.identifier.externalLinkDescription Link to Reseach Profiles en_US

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