Large reversible high-temperature magnetocaloric effect in alloys

✍ Scribed by W.J. Feng; Q. Zhang; L.Q. Zhang; B. Li; J. Du; Y.F. Deng; Z.D. Zhang

• Book ID: 104093749
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 422 KB
• Volume: 150
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/j.ssc.2010.02.022

✦ Synopsis

Accompanied by a second-order paramagnetic to ferromagnetic transition, a large reversible negative S m above room temperature has been observed in Ni 50-x Mn 38+x Sb 12 alloys besides low-field magnetic entropy change S m around/below room temperature. A -S max m of 5.21 J kg -1 K -1 is acquired at 347 K in nominal Ni 49 Mn 39 Sb 12 alloy for a magnetic-field change from 0 to 5 T, with a refrigerant capacity of 184 J kg -1 . The large reversible S M and the high reversible refrigerant capacity indicate that Ni 49 Mn 39 Sb 12 alloy may be a promising candidate for magnetic refrigeration above room temperature.