华东师范大学学报（自然科学版）
華東師範大學學報（自然科學版）
화동사범대학학보（자연과학판）
JOURNAL OF EAST CHINA NORMAL UNIVERSITY(NATURAL SCIENCE)
2005年
1期
68-72,143
,共6页
Oumarou M%李晓东%袁望治%阮建中%赵振杰%杨燮龙
Oumarou M%李曉東%袁望治%阮建中%趙振傑%楊燮龍
Oumarou M%리효동%원망치%원건중%조진걸%양섭룡
巨磁阻抗效应%多层膜%磁控溅射%FeCuNbSiB%绝缘层
巨磁阻抗效應%多層膜%磁控濺射%FeCuNbSiB%絕緣層
거자조항효응%다층막%자공천사%FeCuNbSiB%절연층
GMI effect%multilayered films%magnetron sputtering%FeCuNbSiB%insulator layer
研究在250℃退火温度下非晶FeCuNbSiB薄膜的巨磁阻抗效应.X-ray谱和Mossbauer谱显示样品为非晶状态.导电层的厚度为2 μm,磁性层的厚度为1 μm.三明治结构的最大阻抗效应为20%.为了提高巨磁阻抗效应,在两磁性层之间加入了绝缘层SiO2,在250℃退火温度下最大阻抗效应为62%.随着驱动电流频率的增大,磁阻抗效应曲线由随磁场的单调下降变为出现峰的结构.
研究在250℃退火溫度下非晶FeCuNbSiB薄膜的巨磁阻抗效應.X-ray譜和Mossbauer譜顯示樣品為非晶狀態.導電層的厚度為2 μm,磁性層的厚度為1 μm.三明治結構的最大阻抗效應為20%.為瞭提高巨磁阻抗效應,在兩磁性層之間加入瞭絕緣層SiO2,在250℃退火溫度下最大阻抗效應為62%.隨著驅動電流頻率的增大,磁阻抗效應麯線由隨磁場的單調下降變為齣現峰的結構.
연구재250℃퇴화온도하비정FeCuNbSiB박막적거자조항효응.X-ray보화Mossbauer보현시양품위비정상태.도전층적후도위2 μm,자성층적후도위1 μm.삼명치결구적최대조항효응위20%.위료제고거자조항효응,재량자성층지간가입료절연층SiO2,재250℃퇴화온도하최대조항효응위62%.수착구동전류빈솔적증대,자조항효응곡선유수자장적단조하강변위출현봉적결구.
Giant magneto-impedance (GMI) has been observed in amorphous FeCuNbSiB/Cu/FeCuNbSiB sandwiched films annealed at 250 ℃. The conductive layer is about 2μm while the outer magnetic layers are about 1 μm thick each. The GMI ratio of 20% has been obtained. In the goal to improve this ratio, two insulator layers have been used between the different layers followed by an annealing process at 250 ℃. A GMI ratio of 62% has been obtained. The displacement of GMI peaks with increasing of driving current frequency appears also. The amorphous state of the films was confirmed by an X-ray diffraction and Mossbauer spectrum.
