Abstract
We report on the magnetocaloric effect in Gd100-xBx (x=0, 10, 15) cold rolled ribbons. A moderate entropy change ΔS=5J/kg·K and adiabatic change of ΔT=4.8K were observed for the as-cast materials in an external magnetic field of 3T which is less by 20% in comparison with the pure gadolinium metal. It was found that a significant (up to 70%) depression of magnetization and magnetocaloric properties developed in the course of plastic deformation can completely be restored by means of a high temperature heat treatment. It is concluded that cold rolling is one promising technique for producing foil shaped magnetocaloric materials suitable for designing heat exchangers of magnetic cooling devices.
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