The temperature dependence of magnetization of alloys under various applied magnetic fields.
The magnetic entropy change as a function of temperature for for . The relative cooling powers are represented by the filled areas (with vertical, cross-mesh, and horizontal lines for x = 0, 0.05, and 0.1 samples, respectively).
(a) The M vs H curves recorded at 300 K for all three samples. (b) The M vs T curves in the field-cooled cooling and warming cycles under the magnetic field of 0.02 T.
Observed ( ) and Rietveld refined (solid lines) neutron diffraction patterns for (x = 0, 0.05, and 0.1) at 300 and 22 K. The difference between the observed and calculated patterns is also shown at the bottom of each panel by solid lines. The vertical bars indicate the positions of allowed nuclear (top) and magnetic (bottom) Bragg peaks. The values of goodness of fit , Bragg R-factor , and magnetic R-factor are also given.
Temperature dependence of site averaged Mn moments obtained from the Rietveld refinement of the neutron diffraction data. The solid joining lines are to guide the eyes. The vertical lines represent the error bars.
The magnetic entropy change as a function of for samples. The dotted lines are guide to the eye. Each solid line is the linear fit for a single value of .
The maximum magnetic entropy change and the RCP for the present system and that reported in the literature for some alloys with large MCE around room temperature.
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