Effect of Pt spacers on the interface of Co/FeMn

被引：4
|
作者：
Fu Yan-Qiang [1 ]
Liu Yang [1 ]
Jin Chuan [1 ]
Yu Guang-Hua [1 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China
来源：
ACTA PHYSICA SINICA | 2009年 / 58卷 / 11期
基金：
中国国家自然科学基金;
关键词：
magnetic multilayer; perpendicular anisotropy; exchange coupling; PINNED SYNTHETIC FERRIMAGNETS; PERPENDICULAR EXCHANGE BIAS; THERMAL-STABILITY; ANISOTROPY; ENHANCEMENT; MULTILAYERS;
D O I：
10.7498/aps.58.7977
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 (M-s) of multilayers is changed by the Pt spacer at the Co (bottom)/FeMn interface, and there is an asymptotic approach of M-s to the theoretical value of M-s of the cobalt bulk of 1440 kA/m as the thickness of Co layer (t(Co)) 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.
引用
收藏
页码：7977 / 7982
页数：6
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