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(FeCo)-Ag顆粒膜制備及GMR性能的研究
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國家自然科學基金(50661002); 廣西“自然科學基金”和“廣西信息材料重點實驗室”資助(0575093&0710908-11-Z)


Preparation and GMR of (FeCo)-Ag Granular Films
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    摘要:

    采用磁控濺射方法制備了一系列的(Fe83Co17)xAg100-x(x=40,45,50,55,60)顆粒膜樣品，并利用X射線衍射(XRD)、四探針方法以及振動樣品磁強計（VSM）研究了(Fe83Co17)55Ag45顆粒膜沉積態(tài)及真空退火后的結(jié)構(gòu)、巨磁電阻效應(GMR)以及磁性能。磁電阻測量表明：當x=55時，厚度為400 nm的制備態(tài)薄膜樣品(Fe83Co17)55Ag45的GMR值最大,為–8.1%；XRD結(jié)果表明，隨著退火溫度的升高, (Fe83Co17)55Ag45顆粒膜的微結(jié)構(gòu)發(fā)生了演變,導致(Fe83Co17)55Ag45顆粒膜的GMR值呈現(xiàn)先增后降的趨勢，在150 ℃達到最大值，其值約為–8.3%；(Fe83Co17)55Ag45樣品的磁滯回線顯示隨著退火溫度的不斷升高，矯頑力逐漸增大

    Abstract:

    (Fe83Co17)xAg100-x granular films (x=40, 45, 50, 55, 60) were grown on the substrates of glass using the magnetron sputtering system. The structure, GMR and magnetic property of (Fe83Co17)55Ag45 granular film, which were as-deposited and vacuum annealed, were studied by X-ray diffraction (XRD), a four-point probe method and a vibrating sample magnetometer (VSM). The results of magnetic resistance measurement show that GMR of the sample (Fe83Co17)55Ag45 granular film with 400 nm thickness gets the maximum, –8.1%. XRD results show that microstructure of (Fe83Co17)55Ag45 granular film has changed, which leads GMR to firstly increase and then decrease, and the maximum is –8.3% at 150 °C. Meanwhile, the magnetic hysteresis loop illustrates that the coercive force of (Fe83Co17)55Ag45 granular film increases with the annealing temperature increasing

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陳 偉,成 鋼,武小飛,馬 壘,耿勝董,顧正飛.(FeCo)-Ag顆粒膜制備及GMR性能的研究[J].稀有金屬材料與工程,2013,42(5):1067~1070.[Chen Wei, Cheng Gang, Wu Xiaofei, Ma Lei, Geng Shendong, Gu Zhengfei. Preparation and GMR of (FeCo)-Ag Granular Films[J]. Rare Metal Materials and Engineering,2013,42(5):1067~1070.]
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  • 收稿日期:2012-05-16
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