Ferromagnetic resonance in multilayer metal nanostructures containing an antiferromagnetic layer of variable thickness is studied. The contribution to the linewidth of the ferromagnetic resonance that is caused by spin-pumping current dissipation in an exchange-coupled antiferromagnetic/ferromagnetic bilayer is determined. The dissipative processes that occur in the bulk of the antiferromagnet and at the interface between the antiferromagnet (Fe50Mn50) and the ferromagnet (permalloy, Ni81Fe19) are distinguished. The details of how the dissipation transforms when the antiferromagnet Neel vector deviates from the direction of the exchange-pinning field are determined. The proposed method is effective for studying spin scattering in individual layers and at interlayer interfaces in complex magnetic systems.

中文翻译：

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薄膜双层铁磁体/反铁磁体中的自旋电流耗散

研究了包含可变厚度反铁磁层的多层金属纳米结构中的铁磁共振。确定了由交换耦合反铁磁/铁磁双层中的自旋泵浦电流耗散引起的铁磁共振线宽的贡献。发生在反铁磁体主体中以及在反铁磁体 (Fe50Mn50) 和铁磁体 (坡莫合金，Ni81Fe19) 之间的界面处发生的耗散过程是不同的。确定了当反铁磁体 Neel 矢量偏离交换钉扎场方向时耗散如何变换的细节。所提出的方法对于研究复杂磁系统中单个层和层间界面的自旋散射是有效的。