Abstract Interface induced phenomena in layered magnetic/non-magnetic structures have led to big discoveries, such as giant magnetoresistance, which has defined the field of spintronics. Interfaces are capable of inducing magnetism even in non-magnetic layers, like platinum. Here, we investigated the static magnetic properties of modified interfaces in Fe/Pt bilayers, deposited on MgO substrates via an electron beam evaporation technique. We show the impact of the thickness reduction of the non-magnetic material, from 18 nm down to 1 nm, on the structural and magnetic properties of the epitaxial Fe/Pt bilayers. Below a platinum thickness of 6 nm a significant increase of the magnetic hardness and a uniaxial anisotropy is observed. We correlate the magnetization reversal with the increase of the elastic strain of the Pt layer, in conjunction with the interfacial Fe/Pt roughness and Pt proximity effect, which is enlarged as the Pt thickness is decreased.

中文翻译：

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Pt厚度对外延Fe/Pt双层结构和磁性能的影响

摘要 分层磁性/非磁性结构中的界面感应现象导致了重大发现，例如定义了自旋电子学领域的巨磁阻。即使在非磁性层（如铂）中，界面也能够感应磁性。在这里，我们研究了通过电子束蒸发技术沉积在 MgO 基板上的 Fe/Pt 双层中改性界面的静磁特性。我们展示了非磁性材料厚度从 18 nm 减小到 1 nm 对外延 Fe/Pt 双层结构和磁性能的影响。在 6 nm 的铂厚度以下，观察到磁硬度显着增加和单轴各向异性。我们将磁化反转与 Pt 层弹性应变的增加相关联，