Magnetic properties of carbon-doped FePt nanogranular films
Magnetic properties of carbon-doped FePt nanogranular films
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DOI：
10.1063/1.1616975
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发表时间：
2003-10
影响因子：
4
通讯作者：
A. Perumal;H. Ko;Sung-chul Shin
中科院分区：
文献类型：
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作者：
A. Perumal;H. Ko;Sung-chul Shin
采用共溅射技术在MgO（100）衬底上制备了有序（FePt）1−xCx薄膜，研究了其室温磁性和磁化反转过程。碳浓度高达25体积%的薄膜获得的percandular磁各向异性，并观察到小的碳掺杂的FePt薄膜的矫顽力增强。随着碳浓度的增加，观察到从垂直于面内方向的明显自旋重取向转变。所观察到的磁性相互关联的微观结构的变化，发生作为一个功能的碳掺杂。
The room-temperature magnetic properties and magnetization reversal process of ordered (FePt)1−xCx thin films, prepared by a cosputtering technique on MgO (100) substrates held at 400 °C substrate temperature, have been studied. Perpendicular magnetic anisotropy was obtained for the films with carbon concentrations up to 25 vol % and coercivity enhancement was observed with small carbon-doped FePt thin films. A clear spin-reorientation transition from perpendicular to the in-plane direction was observed with an increase in carbon concentration. The observed magnetic properties are intercorrelated to microstructural changes that occur as a function of the carbon doping.