脉冲频率对铁基纳米非晶丝的GMI影响研究  

Effect of Electric Current Pulse Frequency on GMI of Fe-based Nanocrystalline Alloys Wire

作　　者：杨晓红[1] 方允樟[2] 郑金菊[2] 任俊华[1] 孙怀君[2] 吴文慧[2] 

机构地区：[1]金华职业技术学院,浙江金华321007 [2]浙江师范大学数理信息学院,浙江金华321004

出　　处：《西华大学学报（自然科学版）》2007年第2期85-87,共3页Journal of Xihua University:Natural Science Edition

基　　金：浙江省金华市科技基金资助项目(编号:20051169)

摘　　要：Fe基纳米非晶丝通过脉冲电流获得Fe基纳米晶丝,可以改善其巨磁阻抗效应。通过在不同的脉冲频率下对非晶丝进行退火,并进行巨磁阻效应分析,得出当脉冲频率为25 Hz时,可获得最佳的巨磁阻抗效应,其退火效果(ΔZ1-ΔZ0)/Z00达到12.287%,巨磁阻抗效应(ZHex-Z0)/Z0达到21.988%。Fe-based Nanocrystalline Alloys wire can be obtained from amorphous wire by means of pulse electric current so as to improve the giant magneto-impedance.By changing the pulse frequency of annealing current,GMI of Fe-based Nanocrystalline alloys wire is studied.The result shows that the optimal GMI can be obtained when the pulse frequency is 15Hz,while the effect of annealing is 12.287%,the giant magneto-impedance(ΔZ1-ΔZ0)/Z00 is 21.988%.

关 键 词：Fe基纳米晶丝 巨磁阻抗效应 脉冲电流 退火 脉冲频率 

分 类 号：TG139.6[一般工业技术—材料科学与工程]