SPECIFIC-HEAT OF ERNI IN MAGNETIC-FIELDS AND ITS PERFORMANCE AS REGENERATOR MATERIAL IN GIFFORD-MCMAHON REFRIGERATOR AT CRYOGENIC TEMPERATURES

Authors
YAYAMA H HATTA Y TOMOKIYO A OKAMURA M TOKAI Y TAKAHASHI A HASHIMOTO T
Citation
H. Yayama et al., SPECIFIC-HEAT OF ERNI IN MAGNETIC-FIELDS AND ITS PERFORMANCE AS REGENERATOR MATERIAL IN GIFFORD-MCMAHON REFRIGERATOR AT CRYOGENIC TEMPERATURES, JPN J A P 1, 35(10), 1996, pp. 5545-5549
Citations number
14
Categorie Soggetti
Physics, Applied
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS → ACNP
Volume
35
Issue
10
Year of publication
1996
Pages
5545 - 5549
Database
ISI
SICI code
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 he at under applied magnetic field of 1 T is larger than that of Er3Ni be low 16 K. The numerical simulation of a Gifford-McMahon cycle shows th at 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 m agnetic field to the ErNi regenerator.