CIRAFICI S.

The thermal dependence of the linear and nonlinear ac susceptibilities of the ferromagnetic Y2Fe17 and of the ferrimagnetic Er2Fe17 intermetallic compounds is investigated as a function of the amplitude and frequency of the applied ac field. In both compounds, the change of sign at T-C and the behavior below and above the ferromagnetic or...

From heat capacity measurements performed in the 5-350 K temperature range at 0- and 5-Tesla applied magnetic field on the intermetallic compounds Gd7Pd3 and Gd7Pd2Ni, and on the eutectic between Gd and Gd7Pd3 with composition Gd76Pd24, the main magnetocaloric properties of the alloys were obtained, namely the isothermal entropy change...

No description

In the present work, a brief description of the nonlinear magnetic susceptibility is given together with selected results outlining the relevance of this technique in the analysis of complex magnetic structures. In particular, details are provided concerning the ferromagnetic transition as observed through the third order magnetic...

A newly designed experimental device for direct measurement of the magnetocaloric effect has been assembled and tested. Details about calibration and preliminary measurements performed on Gd as a standard reference material are reported together with results concerning the magnetocaloric effect of three different Gd eutectic compositions...

The magnetic properties of the intermetallic phases R3Co8Sn4 (R = Y, Gd) are presented. The two compounds order ferro- (Y) and ferri-magnetically (Gd) with transition temperatures of 61.5 and 102.5 K, respectively. In the paramagnetic region, the Y-compound follows the Curie-Weiss law with mu = 0.98 mu(B)/Co and theta(P) = 62.0 K while a more...