摘要
用直流磁控溅射方法和原位退火工艺在玻璃基片上制备了FexPt100-x纳米膜.研究发现Fe含量对FePt纳米膜的磁特性有很大的影响.矫顽力和△H随Fe含量的增加而增大.当x=48时,矫顽力Hc达到了1040 kA/m,样品出现很好的有序化L10织构;△H取得最大值,颗粒间相互作用最小.FexPt1-x薄膜的矩形比S随着x的增加而增大,x>46时S值接近1,在一定程度上表明了此时读出信号强度较大;开关场分布SFD的变化情况刚好与此相反,Fe48Pt52获得的SFD值近似等于0.8,说明转变位置波动弱,来自转变的信号噪音低.
FexPt1-x nanogranular films have been fabricated on glass substrates by DC magnetron sputtering and subsequently annealed in situ vacuum.The studies show that the magnetic properties of FePt nanogranular films are greatly affected by the Fe composition.The coercivity(Hc),△H and S increases with increasing Fe content.At x=48,coercivity reaches 1040 kA/m,the sample shows ordered L10 texture;△H obtains the largest,the reaction of granulars is the smallest.The squareness ratio(S) increases with increasing x.At ...
出处
《河北建筑工程学院学报》
CAS
2010年第3期93-96,共4页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
国家自然科学基金资助项目(10274018)
河北省科技厅科技攻关项目(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
磁记录
FEPT
magnetic films
magnetic recording
FePt
