摘要
使用对靶直流磁控溅射和原位退火方法在普通玻璃基底上制备了C/FePt/Fe纳米颗粒薄膜.通过表征分析表明,加入C覆盖层对FePt薄膜的微结构有较大的影响.经过退火处理后C颗粒渗透到磁性层中,起到了隔离磁性颗粒和减弱颗粒间结合能的效果,并且减弱了磁性颗粒间强的交换耦合作用,最终使颗粒和磁畴减小,增加了L10结构的有序程度;样品获得了1 089kA/m的矫顽力.
C/FePt/Fe nanofilms were fabricated on glass substrates by DC magnetron sputtering and subsequently annealed in situ vacuum.The results show that the microstructure and magnetic properties of FePt films depend strongly on the thickness of C capping layer.As a function of C capping layer,the magnetic intergranular binding energy and strong exchange coupling function are reduced.The particle size and magnetic domain size are decreased,the ordered L1 0 texture is increased.The huge coercivity about 1089 kA/m is obtained in the C（12nm）/FePt（30nm）/ Ti（1nm） film.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2012年第6期584-587,共4页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金(10274018)
河北省科技厅科技攻关计划项目(07215105)
张家口市科学技术研究与发展指导项目(0921036B)
关键词
磁性薄膜
FEPT
覆盖层
微结构
magnetism films
FePt films
capping layer
microstructure
