The effect of Fe on microstructure and magnetic thermal performance of LaFel 1.6.xSil.4 alloys were studied by X-ray dif- fraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）,...The effect of Fe on microstructure and magnetic thermal performance of LaFel 1.6.xSil.4 alloys were studied by X-ray dif- fraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, and vibrating-sample magnetometer （VSM）, respectively. The results showed that the excess Fe would make the 1：13 phase reduce in proportion and the easy corrosion phase LaFeSi phase disappear in LaFelL6＊xSil.4 alloys. The LaFel 1.6.xSil.4 alloys kept the first order magnetic phase transition, and the maximum isothermal magnetic entropy changed and the relative cooling power reached the maximum in LaFel 1.6,xSil.4 alloys with x=1.05 and 1.1, respectively.展开更多
基金supported by China Postdoctoral Science Foundation(2013M542274)
文摘The effect of Fe on microstructure and magnetic thermal performance of LaFel 1.6.xSil.4 alloys were studied by X-ray dif- fraction （XRD）, scanning electron microscopy （SEM）, energy dispersive spectroscopy （EDS）, and vibrating-sample magnetometer （VSM）, respectively. The results showed that the excess Fe would make the 1：13 phase reduce in proportion and the easy corrosion phase LaFeSi phase disappear in LaFelL6＊xSil.4 alloys. The LaFel 1.6.xSil.4 alloys kept the first order magnetic phase transition, and the maximum isothermal magnetic entropy changed and the relative cooling power reached the maximum in LaFel 1.6,xSil.4 alloys with x=1.05 and 1.1, respectively.
