C/Co/C纳米颗粒膜微结构和磁特性的时效性研究  

Aging effect of microstructure and magnetic properties of C/Co/C nanogranular films

作　　者：封顺珍 咸立芬[2] 徐芹[3] 张明轩[1] 崔文元[3] 

机构地区：[1]石家庄学院物理学系电气信息工程系,河北石家庄050035 [2]河北科技大学理学院,河北石家庄050018 [3]河北师范大学物理科学与信息工程学院,河北石家庄050016

出　　处：《河北科技大学学报》2010年第1期5-8,共4页Journal of Hebei University of Science and Technology

基　　金：国家自然科学基金资助项目(10847119);河北省自然科学基金资助项目(A2009000254);石家庄学院博士科研启动基金资助项目;石家庄学院科研启动基金资助项目;河北省新型薄膜材料重点实验室开放课题资助项目

摘　　要：室温下,应用磁控溅射法制备了系列类三明治结构C/Co/C颗粒膜。C靶和Co靶分别采用射频溅射和直流对靶溅射模式,并且随后进行了原位退火。在样品制备3年后再次测量了样品的微结构和磁特性。对比3年前的测试结果,发现样品在存放过程中微结构和磁特性有略微改善。通过分析表明,这主要是由于界面处的非磁性C原子进一步扩散进磁性Co颗粒边界,减弱了磁性颗粒间的交换相互作用所致。Pseudo-sandwich nanogranular C/Co/C films are prepared by magnetron sputtering C and Co onto glass substrates at room temperature and subsequent in situ annealing. C and Co targets use an RF and DC facing deposition mode respectively. The microstructure and magnetic properties of the samples are measured again after three years. Compared to that of three years ago, the mierostructure and magnetic properties slightly improve during placement. It has been found that the change is attributed to the reduction of intergrain interaction, which results from the nonmagnetic C atoms diffusing into the grain boundaries of magnetic Co during placement.

关 键 词：纳米颗粒膜 磁控溅射 矫顽力 

分 类 号：O484.4[理学—固体物理] O484.5[理学—物理]