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

A two stage Gifford-McMahon cryocooler is disclosed 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. 14 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
264575
Assignee:
Iowa State Univ. Research Foundation, Inc., Ames, IA (United States) PTO; SCA: 661210; PA: EDB-96:123666; SN: 96001625916
Patent Number(s):
US 5,537,826/A/
Application Number:
PAN: 8-266,090; TRN: 96:016468
Contract Number:
W-7405-ENG-82
Resource Relation:
Other Information: PBD: 23 Jul 1996
Research Org:
Iowa State University
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; MAGNETIC REFRIGERATORS; REFRIGERANTS; REGENERATORS; ERBIUM ALLOYS; NICKEL ALLOYS; TIN ALLOYS; LEAD ALLOYS; GALLIUM ALLOYS; CHEMICAL COMPOSITION

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