Exchange Coupling Assisted FePtC Perpendicular Recording Media
Exchange Coupling Assisted FePtC Perpendicular Recording Media
复制标题
DOI：
10.1063/1.2974794
复制
发表时间：
2008-08
影响因子：
2.1
通讯作者：
J. F. Hu;Jingsheng Chen;Y. F. Ding;B. Lim;W. L. Phyoe;B. Liu
中科院分区：
文献类型：
--
作者：
J. F. Hu;Jingsheng Chen;Y. F. Ding;B. Lim;W. L. Phyoe;B. Liu
制备了基于交换耦合辅助（ECA）垂直记录介质的磁性硬相和软相FePtC薄膜。引入软磁性FePtC层后，FePtC薄膜的磁性降低。横截面透射电子显微镜图像说明，软FePt晶粒位于底部FePt晶粒和晶界的顶部，其中硬和软晶粒由硬FePtC层表面上积累的C层分隔。磁性的降低归因于FePt硬、软晶粒之间的交换耦合。对于被碳层分隔的硬软晶粒，交换耦合的强度取决于碳层的厚度。
Magnetic hard and soft phases FePtC thin films based exchange coupling assisted (ECA) perpendicular recording media were prepared. The coercivity of the FePtC film decreased after introducing a top magnetic soft FePtC layer. The cross-sectional transmission electron microscopy image illustrated that the soft FePt grains were located both on top of the bottom FePt grains and the grain boundaries, where the hard and soft grains were separated by a C layer accumulated on the hard FePtC layer surface. The reduction of coercivity was attributed to the exchange coupling between FePt hard and soft grains. For hard and soft grains separated by the accumulated C layer, the strength of the exchange coupling depended on the carbon layer thickness.