垂直各向异性多层膜中条畴壁磁化的控制
Control of stripe domain wall magnetization in perpendicular anisotropy multilayers
摘要：
本文报道了在具有垂直磁各向异性的[Co（0.44 nm）/Pt（0.7 nm）] $_X$（$X = 48$，100，150）多层膜中，稳定的取向条畴结构中畴壁磁化强度的受控切换。开关过程中，由外部磁场引起的，通过测量的面内磁化的演变监测。%我们证明了面内磁化强度的恢复来源于布洛赫型DW的极化。与微磁学模拟，我们揭示了DW极化的逆转是在特定强度的外部磁场，施加相反的DW极化的DW内的水平布洛赫线的出现和崩溃的结果。我们的研究结果是相关的DW为基础的磁振子和磁多层膜中的气泡skyrmion应用。
英文摘要：
We report on the controlled switching of domain wall (DW) magnetization in aligned stripe domain structures, stabilized in [Co (0.44 nm)/Pt (0.7 nm)]$_X$ ($X = 48$, 100, 150) multilayers with perpendicular magnetic anisotropy. The switching process, induced by an external magnetic field, is monitored by measuring the evolution of the in-plane magnetization. % We show that the remanent in-plane magnetization originates from the polarization of the Bloch-type DWs. With micromagnetic simulations, we reveal that the reversal of the DW polarization is the result of the emergence and collapse of horizontal Bloch lines within the DWs at particular strengths of the external magnetic field, applied opposite to the DW polarization. Our findings are relevant for DW-based magnonics and bubble skyrmion applications in magnetic multilayers.
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