排序方式: 共有4条查询结果,搜索用时 46 毫秒
1
1.
S.A. Manafi R. Pooladi M.A. Bahrevar M. Almasi-kashi 《Journal of Materials Processing Technology》2009,209(10):4874-4879
Designing supraceramic assemblies based on Al2O3 has remained a challenge due to the problems associated with the suitable dispersion in neat compounds and ability to control the preferred orientation in a unique fashion. Herein, granular HCP-(CoCrPt)100−X(Al2O3)X (X represents the percent weight) thin films with Si(1 0 0) substrates have been fabricated using sputtering technique followed by annealing treatment. Structural and magnetic properties of thin film have been investigated for potential application in magnetic recording media. It was shown that coercivity increased from 0.5 to 2.5 kOe by increasing the nano-grain Al2O3 content in the CoCrPt magnetic layers. In CoCrPt-Al2O3 thin films coercivity of 2.5 kOe has been obtained with increasing the Al2O3 content from 3 to 13 wt.% in the annealed thin films. The structural properties of the samples were studied using X-ray diffraction (XRD) and transmission electron microscope (TEM) equipped with selected area electron diffraction (SAED). The magnetic properties of the samples were measured with a vibrating sample magnetometer (VSM). The VSM results showed that the HCP-CoCrPt-Al2O3 granular films are a promising candidate for ultra-high-density recording media because of its low Al2O3 content and simple manufacturing process. 相似文献
2.
1 INTRODUCTIONMany works have been done in recent years onCo based granular alloys for potential applicationsas recording magnetic media[1 5]. The ideal granu lar media should consist of small and uniformgrains. High anisotropy magnetic grains embeddedin a robust non magnetic matrix are required. Highcoercivity, large squareness and negative nuclea tion field are very important for magnetic recordingfilms.The addition of Pt to the recording layer canincrease the anisotrop… 相似文献
3.
Cr和CrTi底层对CoCrPt薄膜介质的磁和结构性能的影响 总被引:1,自引:0,他引:1
Li Zuoyi You Long Song Min Yang Xiaofei Li Zhen Cheng Xiaomin Lin Gengqi 《稀有金属材料与工程》2005,34(10):1517-1519
为了改善记录介质的磁性能,研究了溅射Cr和CrTi底层对Co68Cr17Pt15性能的影响。发现在玻璃盘基和CoCrPt磁性层之间引入100nm厚的Cr底层,可使介质矫顽力从56kA·m-1增加到127kA·m-1,同时剩磁比和矫顽力矩形比分别增加66%和74%。同时还发现Cr底层厚度对介质磁性能有较大影响。考虑到减小Cr底层和磁性层的晶格匹配,在Cr底层里添加Ti元素,当Ti原子分数达到1.5%时,即使在室温下溅射,薄膜也有好的面内磁滞回线,此时矫顽力可达到160kA·m-1。X射线衍射表明在介质中引入Cr和CrTi底层,由于薄膜能更好的沿着垂直于易磁化轴方向生长而使介质性能提高。 相似文献
4.
1