Granular L10 FePt:TiO2 (001) nanocomposite thin films with 5nm grains for high density magnetic recording
Granular L10 FePt:TiO2 (001) nanocomposite thin films with 5nm grains for high density magnetic recording
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DOI：
10.1063/1.2953173
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发表时间：
2008-07
影响因子：
4
通讯作者：
Y. F. Ding;Jingsheng Chen;B. Lim;J. Hu;B. Liu;G. Ju
中科院分区：
文献类型：
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作者：
Y. F. Ding;Jingsheng Chen;B. Lim;J. Hu;B. Liu;G. Ju
采用直流磁控溅射技术在CrRu / MgO衬底上沉积了FePt:TiO2（001）薄膜。研究了TiO2含量对外延FePt（001）薄膜微观结构和磁性能的影响。实验结果表明，即使掺杂20vol% TiO2， FePt薄膜仍能保持（001）择优取向和垂直各向异性。通过在FePt薄膜中掺杂20vol%的TiO2，得到了晶粒尺寸为5nm、矫顽力可调、交换耦合减少的FePt:TiO2（001）薄膜，具有作为低噪声超高密度垂直磁记录介质的潜力。
FePt:TiO2 (001) thin films were deposited on CrRu∕MgO underlayers by dc magnetron cosputtering. The effects of TiO2 content on microstructure and magnetic properties of the epitaxial FePt (001) films were studied. Experimental results showed that even with 20vol% TiO2 doping, FePt films could keep a (001) preferred orientation and perpendicular anisotropy. The FePt:TiO2 (001) film with 5nm grain size, adjustable coercivity, and reduced exchange coupling was obtained by doping 20vol% TiO2 into FePt film, showing great potential as low noise ultrahigh density perpendicular magnetic recording media.