Thermo-reversible permanent magnets in the quasi-binary GdCo5-xCux system

Details Thermo-reversible permanent magnets in the quasi-binary GdCo5-xCux system Thermo-reversible permanent magnets in the quasi-binary GdCo5-xCux system

2007-03-29

arxiv.org/abs/cond-mat/0703775v1

Applied Physics Letters 89 (2006) 122505

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2347282

Ferrimagnetic GdCo5-xCux alloys exhibiting the effect of Gd- and 3d-sublattice magnetization compensation at defined temperatures were studied with respect to their use as thermo-reversible permanent magnets (PM). Coercive fields 0Hc in the range 0.3 to 1.6 T 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 thermo-reversible PM, namely a thermally controlled actuator and a contactless temperature sensor, are demonstrated.

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