Mn0.99V0.01CoGe合金的磁滞行为及其磁热性能研究

摘要

研究了Mn0.99 V0.01 CoGe合金在升降温等温磁化过程中的磁滞行为及对其磁热性能的影响。发现合金在一级磁结构相变附近升降温等温磁化过程表现出明显不同的磁滞行为，降温过程的磁滞损耗明显大于升温过程。讨论了这种磁滞行为的差异现象对合金磁热性能的影响。%The magnetic hysteresis behaviors and its effect on the magnetocaloric properties for the Mn0.99 V0.01 CoGe alloy in the heating and cooling runs have been investigated comparatively in this paper.The magnetic hysteresis behaviors reveal an evident discrepancy between the heating and cooling processes.The av-erage hysteresis losses estimated from the initial magnetization isotherms M(H )measured upon cooling are much larger than that upon heating.We discussed deeply the effects of the difference of magnetic hysteresis be-haviors on the magnetocaloric properties for the Mn0.99 V0.01 CoGe alloy.