Magnetoresistance and Anomalous Hall Effect with Pt Spacer Thickness in the Spin-Valve Co/Pt/[Co/Pt]2 Multilayers
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- 作者：Fang Zhang ; Zhongyuan Liu ; Fusheng Wen…
- 关键词：Co/Pt multilayers ; Anomalous Hall effect ; Perpendicular magnetic anisotropy
- 刊名：Journal of Superconductivity and Novel Magnetism
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：30
- 期：2
- 页码：533-538
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Strongly Correlated Systems, Superconductivity; Magnetism, Magnetic Materials; Condensed Matter Physics; Characterization and Evaluation of Materials;
- 出版者：Springer US
- ISSN：1557-1947
- 卷排序：30
文摘
In the spin-valve Co/Pt/[Co/Pt]2 multilayers with perpendicular magnetic anisotropy, it has been found that magnetoresistance, anomalous Hall resistivity, and longitudinal resistivity demonstrate oscillatory behaviors with the increase in Pt spacer thickness. Moreover, the parameter b oscillates as a function of Pt spacer thickness, which is experimentally determined by fitting the equation \(\rho _{AH} =a^{\prime }\rho _{xx0} +b\rho _{xx}^{2} \) (ρxx0 is the residual resistivity, a′ is the skew scattering parameter, and b consists of the side jump and the intrinsic contributions) via the temperature dependence of the resistivity. These observed oscillatory behaviors can be mainly ascribed to the polarization of Pt spacer, while the polarization in the Co/Pt multilayers depends on the Pt spacer thickness.