华东师范大学学报(自然科学版) ›› 2007, Vol. 2007 ›› Issue (1): 127-134.

• 物理学 电子学 • 上一篇    下一篇

Ni80Fe20复合结构多层膜的巨磁阻抗效应研究

宋子成， 袁望治， 赵振杰， 阮建中， 杨燮龙
  

  1. 华东师范大学 物理系，上海 200062
  • 收稿日期:2005-11-07 修回日期:2006-03-14 出版日期:2007-01-25 发布日期:2007-01-25
  • 通讯作者: 袁望治

Study on Giant MagnetoImpedance Effect in Ni80Fe20Composite Multilayers (Chinese)

SONG Zi-cheng， YUAN Wang-zhi， ZHAO Zhen-jie，RUAN Jian-zhong， YANG Xie-long
  

  1. Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2005-11-07 Revised:2006-03-14 Online:2007-01-25 Published:2007-01-25
  • Contact: YUAN Wang-zhi

摘要： 用磁控溅射法在载玻片上制备了(Ni80Fe20/SiO2)n/Cu/(SiO2/Ni80Fe20)n复合结构多层膜， 并对其巨磁阻抗效应进行了研究.研究结果表明，采用多组双层结构(n>1)后，样品的巨磁阻抗效应明显增大；当n=3时，观测到最大的纵向巨磁阻抗(LMI)效应为10.81%，最大的横向巨磁阻抗(TMI)效应为17.08%.当n=4,5时，巨磁阻抗效应比n=3时略有减小. 由XRD谱和磁滞回线等，研究了双层结构(Ni80Fe20/SiO2)循环次数n引起的样品材料晶体结构和磁性能等变化，以及对样品巨磁阻抗效应的影响.

关键词: X射线衍射谱, 磁滞回线, 巨磁阻抗效应, Ni80Fe20复合结构多层膜, X射线衍射谱, 磁滞回线, 巨磁阻抗效应, Ni80Fe20复合结构多层膜

Abstract: The(Ni80Fe20/SiO2)n/Cu/(SiO2/Ni80Fe20)n composite multilayers were deposited onto glass substrates using RF magnetron sputtering equipment. The giant magneto impedance (GMI) effect was been investigated. The results show that the GMI effect enhanced, when the (Ni80Fe20/SiO2) bilayers structure repeated in the sample. At n=3, the maximum LMI ratio is 10.81%，while the maximum TMI ratios is 17.08%. And when n increases to 4 and 5, the MI ratios decrease slightly compared with the ratios at n=3. By the Xray diffraction spectrums and the hysteresis loops, the change of the
samples′ crystallization structure, magnetism characteristic and GMI effect
were studied, which were induced by the number of bilayers.

Key words: magnetic hysteresis loop, GMI effect, Ni80Fe20 multilayers , X ray diffraction, magnetic hysteresis loop, GMI effect, Ni80Fe20 multilayers

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