Please use this identifier to cite or link to this item:
|Title:||Microstructure, magnetic properties and magnetocaloric effect in melt-spun Ni-Mn-Ga ribbons|
|Publisher:||ELSEVIER SCIENCE SA|
|Citation:||JOURNAL OF ALLOYS AND COMPOUNDS, 478(1-2), 59-62|
|Abstract:||Structural transformation, microstructure and magnetocaloric effect (MCE) were investigated in melt-spun Ni(55)Mn(20.6)Ga(24.4) and Ni(55)Mn(19.6)Ga(25.4) ribbons. Magnetic and thermal studies of the ribbons revealed the occurrence of simultaneous structural and magnetic transitions near room temperature with a narrow thermal hysteresis of magnetization approximate to 2 K. Maximum entropy changes (Delta S(M)) of -9.5 and -10.4J/kg K have been obtained at 309 K for a field change of 2 T in Ni(55)Mn(20.6)Ga(25.4) and Ni(55)Mn(19.6)Ga(25.4) ribbons, respectively. The Ni(55)Mn(19.6)Ga(25.4) ribbon exhibits refrigeration capacity (RC) of 47 J/kg with low average hysteresis loss (approximate to 1.5J/kg) at the merged structural and magnetic transition temperature. (C) 2008|
|Appears in Collections:||Article|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.