Very large coercivity and granular structure of CoPt/SiO/sub 2/ films
Very large coercivity and granular structure of CoPt/SiO/sub 2/ films
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CoPt/SiO/sub 2/ 薄膜具有非常大的矫顽力和颗粒结构
DOI：
10.1109/20.800559
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Y. Shimada
中科院分区：
文献类型：
--
作者：
Cheng Chen;O. Kitakami;S. Okamoto;Y. Shimada
对制备的CoPt/SiO/sub - 2/样品（Co: Pt=47.5: 52.5）进行退火处理，在室温下获得了高矫顽力H/sub / c//spl / ap/14 kOe。TEM和XRD分析表明，在平均晶粒尺寸约为10 ~ 20 nm的颗粒膜中存在晶格常数比为c/a=0.97的有序fct （L1/sub 0/）结构。讨论了晶粒尺寸和堆积密度对矫顽力的影响。
By post-annealing the as-prepared CoPt/SiO/sub 2/ samples with the atomic ratio of Co: Pt=47.5: 52.5, high coercivity H/sub c//spl ap/14 kOe was obtained at room temperature. TEM and XRD revealed the ordered fct (L1/sub 0/) structure with the lattice constant ratio c/a=0.97 in the granular films with the average grain size around 10-20 nm. The grain size and packing density effect on coercivity are also discussed.