Title:
A magnetic refrigerant and a magnetic refrigeration device
Document Type and Number:
Japanese Patent JP6055407
Kind Code:
B2
Abstract:
Provided is a magnetic refrigeration material which has a Curie temperature of not lower than 250 K, and provides refrigeration performance well over that of conventional materials when subjected to a field change up to 2 Tesla, which is assumed to be achievable with a permanent magnet. The magnetic refrigeration material is of a composition represented by the formula La 1-f RE f (Fe 1-a-b-c-d-e Si a Co b X c Y d Z e ) 13 (RE: at least one of rare earth elements including Sc and Y and excluding La; X: Ga and/or Al; Y: at least one of Ge, Sn, B, and C; Z: at least one of Ti, V, Cr, Mn, Ni, Cu, Zn, and Zr; 0.03 ‰¤ a ‰¤ 0.17, 0.003 ‰¤ b ‰¤ 0.06, 0.02 0.03 ‰¤ c ‰¤ 0.10, 0 ‰¤ d ‰¤ 0.04, 0.03 ‰¤ e ‰¤ 0.04, 0 ‰¤ f ‰¤ 0.50), and has an average crystal grain size of not smaller than 0.01 µm and not larger than 3 µm, a Curie temperature of not lower than 250 K, and the maximum (-”S max ) of magnetic entropy change (-”S M ) when subjected to a field change up to 2 Tesla is not less than 5 J/kgK.
Inventors:
Toshio Irie
Application Number:
JP2013522810A
Publication Date:
December 27, 2016
Filing Date:
June 22, 2012
Export Citation:
Assignee:
Santoku Co., Ltd.
International Classes:
C22C38/00; F25B21/00; H01F1/00
Domestic Patent References:
| JP2009221494A | ||||
| JP2006307332A | ||||
| JP2009249702A | ||||
| JP2008214733A | ||||
| JP2003096547A |
Other References:
Jun Shen et al.,"Magnetic properties and magnetic entropy changes of LaFe11.0Co0.8(Si1-xAlx)1.2 compounds",Journal of Magnetism and Magnetic Materials,2007年 3月,Volume 310, Issue 2, Part 3,p.2823-2825
E.C. Passamani et al.,"Magnetic and magnetocaloric properties of La(Fe,Co)11.4SP1.6 compounds (SP=Al or Si)",Journal of Magnetism and Magnetic Materials,2007年 5月,Volume 312, Issue 2, Part 3,p.65-71
E.C. Passamani et al.,"Magnetic and magnetocaloric properties of La(Fe,Co)11.4SP1.6 compounds (SP=Al or Si)",Journal of Magnetism and Magnetic Materials,2007年 5月,Volume 312, Issue 2, Part 3,p.65-71
Attorney, Agent or Firm:
Hajime Sakai
Masahiro Kurai
Masahiro Kurai