| SmCo磁记录薄膜中磁耦合作用的研究 |
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| 引用本文： | 李帅,冯春,李宁,李宝河,于广华,孙文星.SmCo磁记录薄膜中磁耦合作用的研究[J].中国稀土学报,2009,27(6). |
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| 作者姓名： | 李帅 冯春 李宁 李宝河 于广华 孙文星 |
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| 作者单位： | 1. 北京科技大学材料物理与化学系,北京,100083
2. 山东师范大学管理与经济学院,山东,济南,250014 |
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| 摘 要： | 采用磁控溅射方法,在玻璃基片上制备了Cr/SmCo/Cr结构的SmCo薄膜,实验结果表明:在低Sm含量(20.5%(原子分数))和高Sm含量(大于30.7%)的SmCo薄膜中都能形成SmCO_5磁性相,在Sm含量较高的SmCo薄膜中同时还形成了SmCo_2等非磁性相,非磁性相的存在对磁性相有隔离作用,从而降低了磁性晶粒之间的磁耦合作用.因此可以用提高Sm含量的方法来降低SmCo薄膜磁性晶粒之间的磁耦合作用.
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| 关 键 词： | SmCo薄膜 磁记录 交换耦合 稀土 |
Magnetic Exchange Coupling of SmCo Thin Films |
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| Li Shuai,Feng Chun,Li Ning,Li Baohe,Yu Guanghua,Sun Wenxin.Magnetic Exchange Coupling of SmCo Thin Films[J].Journal of the Chinese Rare Earth Society,2009,27(6). |
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| Authors: | Li Shuai Feng Chun Li Ning Li Baohe Yu Guanghua Sun Wenxin |
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| Abstract: | The Cr/SmCo/Cr thin films were prepared on glass substrates by magnetron sputtering. The re-suits showed that the magnetic SmCo_5 phase forms in samples with low Sm concentration (20.5%) and high Sm concentration (30.7%). Whereas, nonmag-netic SmCo_2 phase, which acted as an isolator of mag-netic phases and lowered magnetic exchange coupling between SmCo magnetic grains, also formed in sam-ples with high Sm concentration, therefore, it was fea-sible to decrease the magnetic exchange coupling of SmCo thin films by increasing the Sm concentration. |
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| Keywords: | SmCo thin film magnetic recording magnetic exchange coupling rare earths |
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