摘要
利用X射线衍射仪(XRD)和振动样品磁强计(VSM)分别研究了Zr添加对快淬法制备的α-Fe/Pr2Fe14B纳米复合材料的微结构和磁性能的影响规律。通过测量样品的退磁曲线和回复曲线,分析了样品的磁化行为及其交换耦合作用机制。磁性能测试结果表明,当添加1 at%Zr时,磁性能明显得到提升,尤其是矫顽力从470.7 kA/m提升到793.2 kA/m,磁能积从66.8 kJ/m3提高到90.8kJ/m3。回复曲线研究表明,当α-Fe/Pr2Fe14B合金在外磁场的作用下时,1 at%Zr添加的合金具有最小的磁能量损失。
The microstructure and magnetic properties of the Zr-doped α-Fe/Pr2Fe14B nanocomposite magnets prepared by melt spinning were studied by X-ray diffraction（XRD） and Vibrating Sample Magnetometer（VSM）.The magnetization reversal behavior and exchange-coupling mechanism during the recoil processes of nanocomposite magnet was investigated by analyzing the demagnetization curves and recoil loops of demagnetization curves.The results of the magnetic properties show that the coercivity of the alloys with 1at%Zr addition increases from 470.7 kA/m up to 793.2 kA/m,and the maximum energy product increases from 66.8 kJ/m3 up to 90.8 kJ/m3.The recoil loop results show that 1at%Zr doped sample has a lower energy loss as a function of the applied reversal field.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第6期69-72,共4页
Heat Treatment of Metals
基金
浙江省科学计划项目(2006C14014
2009C21010)
浙江省自然科学基金(Y6100640Y6090542)
浙江省青年优秀教师支助项目
关键词
纳米复合磁体
磁化机理
回复曲线
nanocomposite magnet
magnetization behavior
recoil loops
