2012•Applied Physics LettersOpen access

High performance magnetocaloric perovskites for magnetic refrigeration

C.R.H. Bahl, David Velázquez, K. Nielsen, Kurt Engelbrecht, Kjeld Bøhm Andersen, Regina Bulatova, Nini Pryds

Abstract

We have applied mixed valance manganite perovskites as magnetocaloric materials in a magnetic refrigeration device. Relying on exact control of the composition and a technique to process the materials into single adjoined pieces, we have observed temperature spans above 9 K with two materials. Reasonable correspondence is found between experiments and a 2D numerical model, using the measured magnetocaloric properties of the two materials as input.

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Key concepts: Magnetic refrigeration, Manganite, Materials science, Refrigeration, Thermodynamics, Refrigerant, Condensed matter physics, Ferromagnetism