Enhancement of Magnetocaloric Effects in Single Phase La1-zNdz(Fe0.88S 0.12)13
The single phase of a cubic NaZn13-type La1-zNdz(Fe0.88Si0.12)13 is obtained in the region z ≤ 0.2. The field-induced first-order transition from the paramagnetic to ferromagnetic state, that is, the itinerant-electron metamagnetic (IEM) transition is kept after the substitution of Nd. In addition, a discontinuous change of magnetization at the Cure temperature becomes larger with increasing z. As a result, the isothermal magnetic entropy change and the relative cooling power in the magnetic field change from 0 to 5 T increase to –27 J/kg K and 518 J/kg, respectively, by the partial substitution of z = 0.2.
Young Won Chang, Nack J. Kim and Chong Soo Lee
S. Fujieda et al., "Enhancement of Magnetocaloric Effects in Single Phase La1-zNdz(Fe0.88S 0.12)13", Materials Science Forum, Vols. 561-565, pp. 1093-1096, 2007