Improvement of thermal stability of exchange coupling in FeMn/NiFe films by Pt addition
Improvement of thermal stability of exchange coupling in FeMn/NiFe films by Pt addition
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DOI：
10.1063/1.1359230
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发表时间：
2001-06
影响因子：
3.2
通讯作者：
M. Jimbo;S. Yokochi;K. Yamagishi;J. Kurita
中科院分区：
文献类型：
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作者：
M. Jimbo;S. Yokochi;K. Yamagishi;J. Kurita
研究了Fe(Pt)Mn/NiFe薄膜的交换耦合和热稳定性。在FeMn层中加入Pt原子后，FeMn/NiFe薄膜的大部分性能都得到了改善。电阻率随Pt含量的增加而增加。交换耦合场在约为5-8 at时具有最大值。特别地，我们发现在FeMn层中加入Pt可以显著改善FeMn/NiFe薄膜交换耦合的热稳定性。Fe39Pt6Mn55(7 nm)/NiFe（10 nm）薄膜在300℃退火后得到了100 Oe的交换耦合场和40 Oe的矫顽力。俄歇分析结果表明，Pt的加入抑制了界面的扩散。
An exchange coupling and thermal stability study in Fe(Pt)Mn/NiFe films has been investigated. When Pt atoms were added to an FeMn layer, most of the properties in the FeMn/NiFe films were improved. The resistivity increased with increasing Pt content. The exchange coupling field had a maximum value for a film with about 5–8 at. % Pt. Especially, it was found that the addition of Pt to the FeMn layer improved considerably the thermal stability of exchange coupling in the FeMn/NiFe films. In Fe39Pt6Mn55(7 nm)/NiFe(10 nm) films, an exchange coupling field of 100 Oe and a coercivity of 40 Oe were obtained after annealing at 300 °C. From the result of Auger analysis, it was found that diffusion of the interface was suppressed by Pt addition.