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Magnetocaloric effect of Gd-Tb alloys: influence of the sample shape anisotropy

Publication at Faculty of Mathematics and Physics |
2011

Abstract

The magnetocaloric effect of Gd(1-x) Tb (x) alloys with x=0.00, 0.10, 0.20, 0.25, 0.30 and 0.40 was studied. The magnetic ordering temperatures were determined from the magnetization measurement.

The data obtained from magnetization and specific-heat measurements as well as by the direct measurement are well comparable within their experimental errors. The values of Delta T (ad) are in the proximity of 2.5 K for field change of 1 T and all studied concentrations.

The dependence of magnetocaloric effect on the sample shape anisotropy was documented by the magnetization measurement as well as by the direct measurement.