Magnetocaloric effect and magnetoresistance in GdxLa1−xMnSi compounds

Abstract The measurements of the magnetocaloric effect and magnetoresistance have been carried out for GdMnSi and Gd0.5La0.5MnSi compounds. The Δ T -effect is positive in all temperature range for GdMnSi and changes the sign at the region of AFM–FM phase transition for Gd0.5La0.5MnSi. The maximal values of Δ T reached at temperatures of magnetic phase transitions are equal to 0.3 and 0.5 K at 270 and 315 K, respectively for GdMnSi, and −0.43 and 0.31 K at 103 and 190 K, respectively for Gd0.5La0.5MnSi ( Δ H = 13.5 kOe ). The essential galvanomagnetic effect is found at the region of the AFM–FM transition for Gd0.5La0.5MnSi compound.