Fe-47wt%Ni纳米晶粉芯磁谱及其压力效应  

MagneticSpectrum and Its Pressure Effect for the Fe47wt%Ni Nanocrystal Dust Core

作　　者：陈允鸿[1,2] 朱骏[1,2] 王锦辉[1,2] 范跃明 

机构地区：[1]扬州大学师范学院物理系 [2]江苏常州无线电元件六厂

出　　处：《功能材料》1997年第6期656-657,共2页Journal of Functional Materials

摘　　要：用蒸发冷凝法，制备成不同平均粒径的Ｆｅ４７ｗｔ％Ｎｉ纳米晶粉。将其压成小圆环，测其室温磁谱。结果表明，Ｆｅ４７ｗｔ％Ｎｉ纳米晶粉芯具有较好的高频特性。在（１～３００）ＭＨｚ频率范围内，其复数磁导率实部μ１＞１００，虚部μ２＜２０，损耗角正切ｔｇδ＜０．１，共振频率ｆｒ＞３００ＭＨｚ。当１ＭＨｚ＞ｆ＞４００ＭＨｚ时，μ２及ｔｇδ激剧上升。在（１～３００）ＭＨｚ范围，形成一个很宽的通频带。它有可能成为一个高频、低损耗和宽频带的磁芯材料。Fe47wt%Ni nanocrystal dust with various average particle sizes were prepared by the evaporationcondensation method in N2 atmosphere. The dust were compressed into the shape of small rings,and then their magneticspectra were measured at room temperature. Experiment showed, within (1～300)MHz, the real part μ1 of the complex permeability was greater than 100, and the imaginary part μ2 was less than 20. The tangent of loss angle tgδ was less than 0.1 and the resonance frequency fx was greater than 300MHz. When 1MHz>f>400MHz,the μ2 and tgδ increased fiercely. Within (1～300)MHz,a wide pass band was formed. It was possible that FeNi nanocrystal dust core made a kind of magnetic core material with high frequency, low loss and wide band.

关 键 词：纳米晶 粉芯 磁谱 压力效应 

分 类 号：TB39[一般工业技术—材料科学与工程] O73[理学—晶体学]