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Characterization of the magnetic interactions of multiphase magnetocaloric materials using first-order reversal curve analysis

AutorFranco, V. ; Berón, F.; Pirota, K. R. ; Knobel, M.; Willard, M. A.
Fecha de publicación2015
EditorAmerican Institute of Physics
CitaciónJournal of Applied Physics, 117, 17C124 (2015)
ResumenIn order to understand the magnetocaloric response of materials, it is important to analyze the interactions between the different phases present in them. Recent models have analyzed the influence of these interactions on the magnetocaloric response of composites, providing an estimate value of the interaction field that is consistent with experimental results. This paper analyzes to which extent magnetization first-order reversal curve (FORC) method can be used to calculate these interactions. It is shown that the different field ranges that are explored using these techniques (inside the hysteretic region for FORC; close to magnetic saturation for magnetocaloric effect) produce interaction field values that differ in order of magnitude, with FORC being sensitive to the lower values of the interaction field and magnetocaloric analysis accounting for the larger interactions
Versión del editorhttp://dx.doi.org/10.1063/1.4919121
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