Specific heat of ErNi in magnetic fields and its performance as regenerator material in Gifford-McMahon refrigerator at cryogenic temperatures

Hideki Yayama, Yoshiro Hatta, Akihisa Tomokiyo, Masami Okamura, Yoichi Tokai, Akiko Takahashi, Takasu Hashimoto

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Specific heat of the rare earth compound ErNi is measured in magnetic fields up to 5 T in the temperature range 4.2 to 35 K. The specific heat under applied magnetic field of 1 T is larger than that of Er3Ni below 16 K. The numerical simulation of a Gifford-McMahon cycle shows that the refrigeration capacity using an ErNi regenerator is larger than that using one of Er3Ni or lead. It is shown for the first time that the refrigeration capacity can be increased by application of a weak magnetic field to the ErNi regenerator.

Original languageEnglish
Pages (from-to)5545-5549
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume35
Issue number10
DOIs
Publication statusPublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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