Preparation of a High Density Complex Type Magnetic Mixture of RAl2 System for Ericsson Magnetic Refrigerator and Its Fundamental Characteristics

M. Sahashi, H. Niu, Y. Tohkai, K. Inomata, T. Hashimoto, T. Kuzuhara, A. Tomokiyo, H. Yayama

Research output: Contribution to journalArticle

Abstract

A complex type magnetic mixture in the RAl2 system (where R denotes a rare earth ion) for Ericsson type magnetic refrigerators, is investigated, Previously, the authors reported on the magneto-caloric effects of a stoichiometric RAl2 system, and concluded that this system is a promising candidate for use as Ericsson type magnetic refrigerant in the temperature range above 10 K. In this paper, a method for preparing a complex type RAl2 magnetic system, consisting of a high-density mixture of components on a grain-size scale, is described. This system was found to have the characteristics desired in an Ericsson type refrigerant, including a nearly temperature-independent magnetic entropy change ASm, and a high thermal conductivity.

Original languageEnglish
Pages (from-to)270-280
Number of pages11
JournalIEEE Translation Journal on Magnetics in Japan
Volume3
Issue number3
DOIs
Publication statusPublished - Mar 1988

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Engineering(all)

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