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

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

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dc.contributor.author Rong, Chuanbing
dc.contributor.author Zhang, Hong-wei
dc.contributor.author Shen, Bao-gen
dc.contributor.author Liu, J. Ping
dc.date.accessioned 2010-08-10T15:23:15Z
dc.date.available 2010-08-10T15:23:15Z
dc.date.issued 2006-01-24 en_US
dc.identifier.citation Appl. Phys. Lett. 88, 042504 (2006) en_US
dc.identifier.issn 0003-6951 (print) en_US
dc.identifier.uri http://hdl.handle.net/10106/4991
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.language.iso en_US en_US
dc.publisher American Institute of Physics en_US
dc.subject Curie temperature 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 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)[subscript]z high-temperature magnets
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/v88/i4/p042504/s1 en_US
dc.identifier.externalLinkDescription External link to the published article en_US

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