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 (Delta T-ad) were obtained at 5 and 9 T. The refrigerant capacity, calculated at 5 T, is 530 J kg(-1) for GdNiGa, while for GdNiIn a lower value of 290 J kg(-1) was obtained.
Magnetocaloric properties of GdNiGa and GdNiIn intermetallic compounds
CANEPA, FABIO MICHELE;
1999-01-01
Abstract
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 (Delta T-ad) were obtained at 5 and 9 T. The refrigerant capacity, calculated at 5 T, is 530 J kg(-1) for GdNiGa, while for GdNiIn a lower value of 290 J kg(-1) was obtained.
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