Application of large magnetocaloric effects in itinerant-electron metamagnets to cooling systems

K. Fukamichi, Asaya Fujita, S. Fujieda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The La(FexSi1-x)13 compounds exhibit large magnetocaloric effects (MCEs) due to the itinerant-electron metamagnetic (IEM) transition. By hydrogen absorption, the Curie temperature TC increases up to room temperature with retaining the IEM transition. The La(Fe0.90Si0.10)13H1.1 compound indicates a large isothermal magnetic entropy change of ΔSm = - 28 J/kg K at 287 K in the magnetic field change from 0 to 2 T (ΔB = 2 T). In addition, the MCEs are enhanced by partial substitution of Ce for La. The value of TCfor La(FexSi1-x)13 is decreased by partial substitution of Mn for Fe, keeping excellent MCEs. Consequently, the La(FexSi1-x)13 and their modified compounds are promising as magnetic refrigerants working at a wide range of temperature covering room temperature.

Original languageEnglish
Title of host publicationAdvanced Structural and Functional Materials Design - Proceedings of the International Symposium on Advanced Structural and Functional Materials Design, 2004
PublisherTrans Tech Publications Ltd
Pages137-144
Number of pages8
ISBN (Print)0878499962, 9780878499960
DOIs
Publication statusPublished - 2006 Jan 1
EventInternational Symposium on Advanced Structural and Functional Materials Design, 2004 - Osaka, Japan
Duration: 2004 Nov 102004 Nov 12

Publication series

NameMaterials Science Forum
Volume512
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

OtherInternational Symposium on Advanced Structural and Functional Materials Design, 2004
Country/TerritoryJapan
CityOsaka
Period04/11/1004/11/12

Keywords

  • Curie temperature
  • Itinerant-electron metamagnetic transition
  • Magnetic refrigerant
  • Magnetic refrigeration
  • Magnetocaloric effects
  • Thermal-induced first-order magnetic transition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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