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Title: Erbium-based magnetic refrigerant (regenerator) for passive cryocooler

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.
Inventors:
 [1];  [1]
  1. (Ames, IA)
Issue Date:
OSTI Identifier:
870517
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA) AMES
Patent Number(s):
US 5537826
Application Number:
08/266,090
Contract Number:
W-7405-ENG-82
Research Org:
Ames Laboratory (AMES), Ames, IA; Iowa State University, Ames, IA (US)
Country of Publication:
United States
Language:
English
Subject:
erbium-based; magnetic; refrigerant; regenerator; passive; cryocooler; stage; gifford-mcmahon; temperature; reaching; approximately; 10k; heat; selected; consisting; pb; 75; 25; comprising; mixture; microstructure; temperature stage; passive magnetic; magnetic refrigerant; magnetic heat; heat regenerator; /62/148/420/