西北师范大学学报（自然科学版）2012，Vol.48Issue(5)：36-39,4.
Fe基合金薄带的ALDGMI效应
LDGMI effect on amorphous Fe-based alloy ribbons
张建强 1卢振华1
作者信息
- 1. 天水师范学院物理与信息科学学院,甘肃天水 741001
- 折叠
摘要
Abstract
Amorphous Fe64.8Co7.2Nb4Si4,8Big.2 alloy ribbons(Fe-based alloy ribbons) are prepared by single roller melt-spinning technique. The longitudinal driven gaint magneto-impedance (LDGMI) effect of the Fe-based alloy ribbons which annealed by Joule-heating in the atmosphere of humid air have been investigated by impedance-analyzer. The relationship between ac driven frequencies / and LDGMI effect is discussed and it is proved that has a critical frequency (fc = 80 MHz), the symmetric GMI behavior appears in frequency region(f-<fc), while the asymmetric GMI behavior appears in frequency region(f> fc). The analysis shows that the AGMI effect may be responsible for the magnetic exchange coupling between surface oxide layer and inner amorphous layer.关键词
Fe基合金薄带/焦耳热退火/ALDGMI效应/交换耦合Key words
Fe-based alloy ribbon/ Joule-heated annealing/ ALDGMI effect/ exchange coupling分类
数理科学引用本文复制引用
张建强,卢振华..Fe基合金薄带的ALDGMI效应[J].西北师范大学学报（自然科学版）,2012,48(5):36-39,4.
