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Co/Cu92Mn8/Co结构中的低场巨磁电阻研究
LOW FIELD GIANT MAGNETORESISTANCE BEHAVIOR IN Co/Cu92Mn8/Co STRUCTURES
【摘要】 对三明治结构的Co/Cu/Co 和Co/Cu92 Mn8/Co 系列的巨磁电阻效应进行了研究,发现两者的巨磁电阻均随中介层厚度作周期性振荡,但是接近反相.作为与Co/Cu/Co 系统的比较,发现若在Cu 基中稀释Mn 原子,巨磁电阻随外磁场变化的曲线会有非常大的改变,同时饱和场或开关场也有较大的下降,这意味着有可能为Co/Cu 金属多层膜的巨磁电阻的实用化研究开辟出一条新的思路.
【Abstract】 The giant magnetoresistance (GMR) effects in sandwiched Co/Cu/Co and Co/CuMn/Co structures have been investigated.The GMR oscillates with the spacer thickness for both cases,but nearly antiphased.With diluted Mn atoms in the Cu spacer,the GMR curve as a function of the magnetic field changes a lot,and the saturation/switching field for GMR can be reduced greatly compared with that in Co/Cu/Co systems.This may suggest one way to obtain a highly sensitive GMR.
【基金】 国家自然科学基金!( 批准号:19674012) ;上海市科技发展基金!( 批准号:98ZA14014);上海市应用物理中心资助
- 【文献出处】 物理学报 ,ACTA PHYSICA SINICA , 编辑部邮箱 ,1999年S1期
- 【分类号】TG132.2
- 【被引频次】2
- 【下载频次】54