Magnetic field influence on er3ni specific heat

Yoichi Tokai, Akiko Takahashi, Masashi Sahashi, Takasu Hashimoto, Hideki Yayama, Akihisa Tomokiyo

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Er3Ni specific heat in 0, 1, 3, and 4.3 T magnetic fields was measured. The specific heat curves for 0 T and 1 T have a single peak due to magnetic phase transition, but those for 3 T and 4.3 T have no peak. Er3Ni specific heat decreases with increasing magnetic field around its ordering temperature, but increases in the higher-temperature region. Using the measured specific heat data, regenerator efficiency and cooling power were calculated to estimate the specific heat reduction influence due to a magnetic field on the Er3Ni regenerator performance. The results show that efficiency and cooling power in the practical leaking magnetic field are almost the same as those in 0 T.

Original languageEnglish
Pages (from-to)3332-3335
Number of pages4
JournalJapanese journal of applied physics
Volume31
Issue number10 R
DOIs
Publication statusPublished - 1992 Oct

Keywords

  • ErNi specific heat
  • Helium temperature refrigeration
  • Magnetic fields
  • Refrigerator
  • Regenerator matrix

ASJC Scopus subject areas

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

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