CIRAFICI S.

The crystallographic parameters and electrical resistivity measurements in the 1.5–300 K temperature range for the LaXSn phases (X ≡ Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au) are reported. A change in structure with increasing group number of the transition metal is observed. A new superconducting compound, LaRhSn with Tc = 1.7 K, is detected by...

As a part of a current research concerning the physical characterisation of Rare Earth intermetallic compounds for magnetic refrigeration devices, the magnetocaloric properties of the Gd7Pd3 phase, which shows a ferromagnetic transition at 318 K, are presented. Heat capacity measurements have been performed in the 5-360 K temperature range and...

The magnetic properties of the R3CoxSn4 phases (R = Pr, Nd, Sm) were studied by AC and DC magnetic techniques. The three compounds order magnetically at 17, 37 and 83 K, respectively. Pr3Co8Sn4 and Nd3Co8Sn4 exhibit a spin reorientation transition under an applied field of 4 T (Pr) and 2 T (Nd), detected also by DC thermomagnetic measurements....

Electrical resistivity (4.2-300 K range) and magnetization measurements (4.2-300 K and 0-1 T) were performed on GdNiGa, TiNiSi type. Onset of ferromagnetism is observed at T-c=30.5 K, with a magnetic moment saturation value (H=1 T) at 4.2 K of 7.2 mu(B). A Curie-Weiss like behaviour is observed above T-c, with a paramagnetic Curie temperature...

A complete physical characterisation, through specific heat, electrical resistivity and magnetization measurements was performed, in a wide temperature range on the new phase Ce2CoSn7, which crystallizes in a very large fee cell with a structure type similar to the Tb117Fe52Ge112 one. From the real part of the AC susceptibility data a broad...

The low-temperature heat capacities of the two ternary intermetallic compounds GdNiGa and GdNiIn, which order ferromagnetically at 30.5 and 93.5 K respectively, were measured as a function of the magnetic field up to 9 tesla. From the experimental data the isothermal magnetic entropy change (Delta S-magn) and the adiabatic temperature raise...

A systematic study on the structural, electrical and magnetic properties of the ErFe4 Ge2 intermetallic phase was carried out. From scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and high temperature electrical resistivity we found that the room temperature ferromagnetism may be ascribed to the presence ...

Thermodynamic, magnetic and electrical properties of the Nd7Co6Al7 intermetallic phase have been extensively studied. The compound crystallises in the tetragonal Pr7Co6Al7 type structure (space group P4/mbm) and undergoes a ferromagnetic transition at 15.5 K. From the hysteresis loop the values of the remanence and of the coercive field were...