采用RF反应溅射法制备了室温下TMR值达6.5%的NiFe/Al2O3/Co磁性隧道结.样品制备采用一系列的掩模,Al2O3层的制备采用RF反应溅射并原位热氧化方法,隧道结的面积为0.2mm×0.2mm.样品的Ⅰ-Ⅴ特性曲线说明了样品中隧道效应的存在,利用XPS分析了样品界面特性及样品成分随膜厚的变化.
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