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MAGNETIC REFRIGERATOR IN THE TEMPERATURE RANGE FROM 10 K TO THE ROOM TEMPERATURE: THE FERROMAGNETIC REFRIGERANTS.

[In Japanese. / En japonais.]

Author(s) : HASHIMOTO T.

Type of article: Article

Summary

THE CRITERIA FOR SELECTING MAGNETIC MATERIALS FOR A REFRIGERANT OF A MAGNETIC REFRIGERATOR IN THE TEMPERATURE RANGE FROM 4.2 TO 300 K HAVE BEEN CONSIDERED. FIRST, BY ASSUMING THE MOLECULAR FIELD APPROXIMATION, THE AUTHORS HAVE CALCULATED THE MAGNETIC ENTROPY OF THE TYPICAL 3-DIMENSIONAL FERROMAGNETIC SUBSTANCE NEAR THE CURIE TEMPERATURE AS A FUNCTION OF TEMPERATURE AND MAGNETIC FIELD STRENGTH. SECOND, BY USING THE DEBYE APPROXIMATION, THE TEMPERATURE VARIATION OF THE LATTICE ENTROPY AS A FUNCTION OF THE DEBYE TEMPERATURE HAS BEEN MADE CLEAR. SEVERAL CRITERIA FOR THE MAGNETIC REFRIGERATOR USED NEAR ROOM TEMPERATURE ARE DISCUSSED.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1982-1806
  • Languages: Japanese
  • Publication date: 1981
  • Source: Source: Cryog. Eng.
    vol. 16; n. 4; 193-201; 11 fig.; 1 tabl.; 12 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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