摘要
应用对靶磁控溅射法在玻璃基底上制备了类三明治结构C/Co/C纳米颗粒膜,并进行了原位退火.发现磁性层厚度对C/Co/C颗粒膜的微结构和磁特性有明显影响.在400℃退火的样品具有很好的六角密堆积结构,磁矩很好的排列在膜面内.随着磁性层Co层厚度的增加,矫顽力Hc先增大然后减小, 粒径和磁畴簇略微增大,样品的表面粗糙度Ra也减小到了0.5 nm左右.
Nanogranular C/Co/C films were prepared by facing magnetron sputtering from C and Co onto glass substrates at room temperature and subsequent in situ annealing. The structure and magnetic properties of films strongly depend on the Co layer thickness. X-ray diffraction (XRD) shows that the majority of Co nanograins are formed as the hexagonal-close-packed (hcp) structure annealing at 400°C. Vibrating sample magnetometer (VSM) measurements indicate that the magnetic moment lies well in the film plane. With increasing the Co layer thickness, coercivity (Hc) first increases and then decreases, the grain size and magnetic clusters slightly increase, and the value of roughness (Ra) is about 0.5 nm.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2005年第2期165-169,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金资助项目10274018河北省教育厅基金2002116河北师范大学重点基金Z200102资助项目~~
关键词
无机非金属材料
纳米颗粒膜
磁控溅射
矫顽力
剩磁比
原位退火
Annealing
Carbon
Cobalt
Grain size and shape
Magnetic properties
Magnetron sputtering
Nanostructured materials
X ray diffraction
