Title :
A model for hysteresis and magnetocaloric effect in magnetic field driven phase transformations
Author :
Basso, V. ; Sasso, C.P. ; LoBue, M. ; Bertotti, G.
Author_Institution :
IEN Galileo Ferraris, Torino, Italy
Abstract :
The application of the model that connects magnetization curves to the heat exchange along the hysteresis loop for magnetocaloric materials of the class Gd-Si-Ge alloys in which phase transformation take place was discussed. The hysteresis curves showed distinct transition from paramagnetic to ferromagnetic phase as the field is increased. The model parameters were determined by assuming a Gaussian Preisach distribution.
Keywords :
ferromagnetic materials; ferromagnetic-paramagnetic transitions; gadolinium alloys; germanium alloys; heat transfer; magnetic hysteresis; magnetocaloric effects; paramagnetic materials; silicon alloys; Gaussian Preisach distribution; GdSiGe; heat exchange; hysteresis loop; magnetization curves; magnetocaloric effect; magnetocaloric materials; model parameters; paramagnetic-ferromagnetic phase transition; Entropy; Magnetic hysteresis; Magnetic materials; Magnetic separation; Magnetization; Maxwell equations; Paramagnetic materials; Production systems; Temperature dependence; Temperature distribution;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464326
