Magnetocaloric effect in the intermetallic compoundR. Nirmala1, A. V. Morozkin2 and S. K. Malik1
1 Tata Institute of Fundamental Research - Mumbai 400 005, India
2 Moscow Lomonosov State University - Moscow, GSP-2, 119992, Russia
received 26 July 2005; accepted in final form 16 September 2005
published online 12 October 2005
The rare-earth intermetallic compound, (orthorhombic -type, space group Pnma), has been synthesized and is found to be a ferromagnet with a transition temperature, , of . Magnetization vs. field isotherms for this compound were measured in the vicinity of in applied fields upto 7 . Using these data, the isothermal magnetic entropy change, , has been computed. The magnetic entropy change is large, attains a value of 4.8 at for a field change of 7 and is spread over a wide temperature range exhibiting a table-like magnetocaloric effect, thus making this material attractive for Ericson-cycle magnetic refrigerator applications.
75.30.Sg - Magnetocaloric effect, magnetic cooling.
75.50.Cc - Other ferromagnetic metals and alloys.
75.47.-m - Magnetotransport phenomena; materials for magnetotransport.
© EDP Sciences 2005