Erbium-based magnetic refrigerant (regenerator) for passive cryo

Details Erbium-based magnetic refrigerant (regenerator) for passive cryo Erbium-based magnetic refrigerant (regenerator) for passive cryo

1994-06-27

1996-07-23

Sheehan, John

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

148301, 420416, F25B 900

Patent

active

055378269

ABSTRACT:
A two stage Gifford-McMahon cryocooler having a low temperature stage for reaching approximately 10K, wherein the low temperature stage includes a passive magnetic heat regenerator selected from the group consisting of Er.sub.6 Ni.sub.2 Sn, Er.sub.6 Ni.sub.2 Pb, Er.sub.6 Ni.sub.2 (Sn.sub.0.75 Ga.sub.0.25), and Er.sub.9 Ni.sub.3 Sn comprising a mixture of Er.sub.3 Ni and Er.sub.6 Ni.sub.2 Sn in the microstructure.

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