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MAGNETOCALORIC CASCADE AND METHOD FOR FABRICATING A MAGNETOCALORIC CASCADE

  • US 20180005735A1
  • Filed: 12/07/2015
  • Published: 01/04/2018
  • Est. Priority Date: 12/18/2014
  • Status: Active Grant
First Claim
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1. A magnetocaloric cascade, comprising:

  • a sequence of magnetocaloric material layers having different Curie temperatures TC, whereinthe magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer, and each pair of next neighboring magnetocaloric layers of the magnetocaloric cascade has a respective Curie-temperature difference amount Δ

    TC between their respective Curie temperatures, whereinthe hot-side outer layer or the cold-side outer layer or both the hot-side and cold-side outer layer exhibits a larger ratio mΔ

    Smax

    TC in comparison with any of the inner layers, m denoting the mass of the respective magnetocaloric material layer and Δ

    Smax denoting a maximum amount of isothermal magnetic entropy change achievable in a magnetic phase transition of the respective magnetocaloric material layer.

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