NiO覆盖层对垂直磁各向异性Co/Pt多层膜中层间交换耦合的温度依赖性的影响
Effect of a NiO capping layer on the temperature dependence of the interlayer coupling in Co/Pt multilayer with perpendicular anisotropy
本文研究了超薄NiO覆盖层对垂直磁各向异性多层膜[Pt(26.5埃)/Co(4埃)]3 层间交换耦合的温度依赖关系的影响。由于NiO(11埃)覆盖层的存在，Co层之间的层间交换耦合随着温度变化发生转变。在T≥270 K时，Co层之间只存在反铁磁耦合；在 220 K≤T＜270 K时，铁磁耦合与反铁磁耦合共存；当温度低于220 K时，薄膜中只有铁磁耦合。Pt层极化随温度的变化是产生这种反铁磁-铁磁耦合转变的原因之一。
he effect of an ultra thin NiO(11A) capping layer on the temperature dependence of the interlayer coupling of a [Pt(26.5A)/Co(4A)]3 multilayer with perpendicular anisotropy has been investigated. In the presence of the NiO(11A) capping layer, the interlayer coupling between the Co layers has been observed to demonstrate interesting temperature-dependent transitions. Only the antiferromagnetic interlayer coupling exists at T≥270 K. With the decrease of temperature, the coexistence of ferromagnetic and antiferromagnetic interlayer coupling is observed in the temperature range of 220 K≤T＜270 K. When the temperature is lower than 220 K, only the ferromagnetic interlayer coupling exists. The temperature-dependent polarization of the Pt layers can be one of the origins for the observed AF-to-FM transitions.
李磊、田永君、张芳、卢亚锋、王楠、温福昇、何巨龙、徐波、柳忠元、于栋利、韩宪越
物理学材料科学
关磁性多层膜垂直磁各向异性反铁磁材料铁磁-反铁磁转变
magnetic multilayerperpendicular magnetic anisotropyantiferromagnetic materialsferromagnetic-antiferromagnetic transition
李磊,田永君,张芳,卢亚锋,王楠,温福昇,何巨龙,徐波,柳忠元,于栋利,韩宪越.NiO覆盖层对垂直磁各向异性Co/Pt多层膜中层间交换耦合的温度依赖性的影响[EB/OL].(2010-12-07)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201012-147.点此复制
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