Thermoreversible permanent magnets in the quasibinary GdCo5−xCux system

Ferrimagnetic GdCo5−xCux alloys exhibiting the effect of Gd- and 3d-sublattice magnetization compensations at defined temperatures were studied with respect to their use as thermoreversible permanent magnets (PMs). Coercive fields μ0Hc in the range of 0.3–1.6T were measured for annealed single cryst...

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Bibliographic Details
Published in:Applied physics letters 2006-09, Vol.89 (12)
Main Authors: Grechishkin, R. M., Kustov, M. S., Cugat, O., Delamare, J., Poulin, G., Mavrudieva, D., Dempsey, N. M.
Format: Article
Language:English
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Summary:Ferrimagnetic GdCo5−xCux alloys exhibiting the effect of Gd- and 3d-sublattice magnetization compensations at defined temperatures were studied with respect to their use as thermoreversible permanent magnets (PMs). Coercive fields μ0Hc in the range of 0.3–1.6T were measured for annealed single crystals with x=1–2.2 having compensation points in the vicinity of room temperature. Two applications of such a thermoreversible PM, namely, a thermally controlled actuator and a contactless temperature sensor, are demonstrated.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2347282