| Ni过渡层对Co/Cu/Co三明治膜微结构及巨磁电阻性能的影响 |
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| 引用本文： | 李铁,沈鸿烈,沈勤我,李冠雄,邹世昌. Ni过渡层对Co/Cu/Co三明治膜微结构及巨磁电阻性能的影响[J]. 电子显微学报, 1999, 18(1): 29-34 |
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| 作者姓名： | 李铁 沈鸿烈 沈勤我 李冠雄 邹世昌 |
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| 作者单位： | 中国科学院上海冶金研究所,信息功能材料国家重点实验室,传感技术联合国家重点实验室,上海,200050 |
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| 摘 要： | 本文利用原子力显微镜对具有不同厚度Ｎｉ过层的Ｃｏ５．０ｎｍ／Ｃｕ３．５ｎｍ／Ｃｏ５．０ｎｍ三明治在各个制备阶段样品的表面形貌进行了系统的研究，并结合Ｘ射线衍射的结果，发现Ｎｉ过渡层可以使Ｃｏ／Ｃｕ／Ｃｏ三明治的界面平整，并形成强的（１１１）织构，从而导至瓣巨磁电阻值增大和矫顽力减少。电阻率的分析是表明过厚的Ｎｉ过渡层由于分流效应的存在会削弱材料的巨磁电阻值。
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| 关 键 词： | 微结构 原子力显微镜(AFM) 巨磁电阻效应 过渡层 |
Influence of Ni buffer layer on micro-structure and giant magnetoresistance of Co/Cu/Co sandwiches |
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| LI Tie,SHEN Hong-lie,SHEN Qin-wo,LI Guan-xiong,ZOU Shi-chang. Influence of Ni buffer layer on micro-structure and giant magnetoresistance of Co/Cu/Co sandwiches[J]. Journal of Chinese Electron Microscopy Society, 1999, 18(1): 29-34 |
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| Authors: | LI Tie SHEN Hong-lie SHEN Qin-wo LI Guan-xiong ZOU Shi-chang |
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| Abstract: | Micro structure and giant magnetoresistance were investigated for Co 5 0nm/Cu 3 5nm/Cu 5 0nm sandwiches with different thickness of Ni buffer layers at different fabrication steps by atomic force microscope. The topographies of the sandwiches with Ni buffer layer showed that the interfaces of the Co/Cu/Co sandwiches were flattened significantly. The X ray diffraction results indicated that strong (111) texture is formed in Ni buffered Co/Cu/Co sandwiches. All these improvements of the structure enhanced the magnetoresistance and reduced partly the coercivity. In addition, the decrease of the MR ratio was found to be resulted from the current shunting in the over thick Ni buffer layer by resistivity analysis. |
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| Keywords: | micro structure atomic force microscope giant magnetoresistance effect buffer layer |
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