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The (Dy1-xErx)Al2 Alloys as Active Magnetic Regenerators for Magnetic Refrigeration

  • K. A. GschneidnerJr.
  • V. K. Pecharsky
  • S. K. Malik
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

The low temperature properties (heat capacity from 3 to 350 K in fields up to 10 T, and both ac magnetic susceptibility and dc magnetic susceptibility and magnetization from 4 to 325 K in dc fields up to 5.5 T) of nine (Dy1-xErx)Al2 alloys have been studied as potential active magnetic regenerator (AMR) materials for hydrogen liquefaction using magnetic refrigeration. These data indicate that the (Dy1-xErx)Al2 alloys would make excellent AMR materials, especially the combination (Dy0.4Er0.6)Al2 plus DyAl2 phase mixture, which is significantly better than the prototype (Dy0.5Er0.5)Al2 plus GdNi2 phase mixture currently being tested. In addition, the magnetic phase diagram of the (Dy1-xErx)Al2 has been determined.

Keywords

Heat Capacity Easy Axis Magnetic Phase Diagram Magnetic Refrigeration Spin Reorientation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • K. A. GschneidnerJr.
    • 1
  • V. K. Pecharsky
    • 1
  • S. K. Malik
    • 1
  1. 1.Ames Laboratory and Department of Materials Science and EngineeringIowa State UniversityAmesUSA

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