Fabrication of SmCo$_{5}$ Double-Layered Perpendicular Magnetic Recording Media
Fabrication of SmCo$_{5}$ Double-Layered Perpendicular Magnetic Recording Media
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DOI：
10.1109/tmag.2007.892591
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发表时间：
2007-06
影响因子：
2.1
通讯作者：
T. Osaka;Y. Yamashita;J. Sayama;T. Asahi;J. Ariake;K. Harada;K. Ouchi
中科院分区：
文献类型：
--
作者：
T. Osaka;Y. Yamashita;J. Sayama;T. Asahi;J. Ariake;K. Harada;K. Ouchi
为了实现超高密度磁记录，我们制备了具有高垂直磁各向异性的SmCo 5双层垂直磁记录介质。在Cu/Ti中间层和Co-Zr-Nb软磁衬层之间引入Ru缓冲层的双层介质表现出高的垂直磁各向异性，而没有Ru缓冲层的双层介质则没有表现出高的垂直磁各向异性。俄歇电子能谱表明，Ru缓冲层抑制了Cu/Ti中间层与Co-Zr-Nb软磁底层之间的互扩散。本文首次报道了SmCo_5双层垂直磁记录介质的读写特性。在高Ar气压下沉积Sm-Co层时，由于磁性团簇较小，介质噪声较小
We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters