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

doi:10.1143/jjap.35.5545

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

Division for Experimental Natural Science

Research output: Contribution to journal › Article › peer-review

17 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 language	English
Pages (from-to)	5545-5549
Number of pages	5
Journal	Japanese Journal of Applied Physics
Volume	35
Issue number	10
DOIs	https://doi.org/10.1143/jjap.35.5545
Publication status	Published - 1996

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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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.",

author = "Hideki Yayama and Yoshiro Hatta and Akihisa Tomokiyo and Masami Okamura and Yoichi Tokai and Akiko Takahashi and Takasu Hashimoto",

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T1 - Specific heat of ErNi in magnetic fields and its performance as regenerator material in Gifford-McMahon refrigerator at cryogenic temperatures

AU - Yayama, Hideki

AU - Hatta, Yoshiro

AU - Tomokiyo, Akihisa

AU - Okamura, Masami

AU - Tokai, Yoichi

AU - Takahashi, Akiko

AU - Hashimoto, Takasu

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

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

Abstract

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