| Abstrakt: |
The effect of the B-addition on magnetic entropy change ΔSM and hysteresis loss in La(Fe,Si)13 is studied. The maximal values of ΔSM for LaFe11.9Si1.1, LaFe11.5B0.4Si1.1, LaFe11.5Si1.5, and LaFe11.0B0.5Si1.5 are found to be 27.0, 26.1, 23.7, and 21.2 J/kg K at Curie temperature TC for a field change in 0-5 T, respectively. The maximal hysteresis losses around TC are 43 and 21 J/kg for LaFe11.9Si1.1 and LaFe11.5Si1.5, respectively, while almost no magnetic hysteresis is observed for the B-doped compounds. Our result reveals that a large ΔSM and a small hysteresis loss can be simultaneously achieved in NaZn13-type La(Fe,Si)13 compounds by the addition of B. [ABSTRACT FROM AUTHOR] |
