Strong magnetic anisotropy is crucial for spintronic devices, but the strength of in-plane anisotropy (IMA) has constrained its applications in magnetic storage devices in contrast with the perpendicular magnetic anisotropy (PMA). In our study, we observed a giant interfacial uniaxial IMA in Co/Pt(110) bilayers that is approximately five times larger than the PMA in Co/Pt(111) systems. By adding another interface to form Pt/Co/Pt trilayers, the total interfacial uniaxial IMA can be further enhanced to $13.1\pm 0.3\mathrm{erg}/{\mathrm{cm}}^2$, making it a promising platform for high-density storage devices. The interfacial IMA in Co/Pt(110) bilayers is related to the Co at the interface and can be controlled by inserting an ultrathin Cu layer. Our results demonstrated the strong in-plane anisotropy in Co/Pt(110) systems, making it a promising platform for studying the spintronic phenomenon in strongly anisotropic systems.

中文翻译：

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MgO(110) 基底上生长的 Co/Pt 双层中巨大的界面面内磁各向异性

强磁各向异性对于自旋电子器件至关重要，但与垂直磁各向异性（PMA）相比，面内各向异性（IMA）的强度限制了其在磁存储器件中的应用。在我们的研究中，我们观察到Co/Pt(110)双层中存在巨大的界面单轴IMA，其大约比Co/Pt(111)系统中的PMA大五倍。通过添加另一个界面形成 Pt/Co/Pt 三层，总界面单轴 IMA 可以进一步增强到$13.1\pm 0.3\mathrm{尔格}/{\mathrm{厘米}}^2$，使其成为高密度存储设备的一个有前途的平台。Co/Pt(110)双层中的界面IMA与界面处的Co有关，并且可以通过插入超薄Cu层来控制。我们的结果证明了Co/Pt(110)系统中强的面内各向异性，使其成为研究强各向异性系统中自旋电子现象的有前途的平台。