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Pt插层对Co/FeMn界面的影响

付艳强 刘洋 金川 于广华

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Pt插层对Co/FeMn界面的影响

付艳强, 刘洋, 金川, 于广华

Effect of Pt spacers on the interface of Co/FeMn

Fu Yan-Qiang, Liu Yang, Jin Chuan, Yu Guang-Hua
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  • 采用磁控溅射的方法制备了Co/FeMn/Co多层膜,研究了Co(底部)/FeMn和FeMn/Co(顶部)界面插入Pt层后磁矩的变化情况.通过测量磁滞回线可知,Co(底部)/FeMn界面的Pt插层改变了体系的饱和磁化强度Ms,随着Co层厚度(tCo)的增加Ms不断趋近于Co块体结构理论值1440 kA/m.这是因为Co(底部)/FeMn界面产生了净磁矩,而界面处的Pt插层可以减少这种净磁矩的产生.但是
    Co/FeMn/Co multilayers were prepared by magnetron sputtering. The change of magnetic moments by insertion of Pt spacer at the Co (bottom)/FeMn interface and FeMn/Co (top) interface has been investigated. According to the hysteresis loops measured by alternating gradient magnetometer (AGM), the saturation magnetization (Ms) of multilayers is changed by the Pt spacer at the Co (bottom)/FeMn interface, and there is an asymptotic approach of Ms to the theoretical value of Ms of the cobalt bulk of 1440 kA/m as the thickness of Co layer (tCo) is increased. This behavior is due to the production of net magnetic moments at the Co (bottom)/FeMn interface, which are decreased by Pt spacer at the Co (bottom)/FeMn interface. However, a significant difference between the Co (bottom)/FeMn interface and the FeMn/Co (top) interface is observed, as little influence of the Pt spacer on magnetic moments is shown when inserted at the FeMn/Co (top) interface.
    • 基金项目: 国家自然科学基金(批准号:50831002,50871014,50671008)资助的课题.
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  • 文章访问数:  7480
  • PDF下载量:  833
  • 被引次数: 0
出版历程
  • 收稿日期:  2009-02-22
  • 修回日期:  2009-03-25
  • 刊出日期:  2009-11-20

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