Observation of Various and Spontaneous Magnetic Skyrmionic Bubbles at Room Temperature in a Frustrated Kagome Magnet with Uniaxial Magnetic Anisotropy
Observation of Various and Spontaneous Magnetic Skyrmionic Bubbles at Room Temperature in a Frustrated Kagome Magnet with Uniaxial Magnetic Anisotropy
复制标题
室温下具有单轴磁各向异性的受抑戈薇磁体中各种自发磁斯格明子气泡的观察
DOI：
10.1002/adma.201701144
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发表时间：
2017-08-04
影响因子：
29.4
通讯作者：
Zhang, Zhidong
中科院分区：
文献类型：
--
作者：
Hou, Zhipeng;Ren, Weijun;Zhang, Zhidong
对具有拓扑保护的skyrmionic自旋纹理的材料的追求继续受到新设备的承诺的推动。虽然许多材料已经证明了这种自旋纹理的存在，但在实现基于磁skyrmions的设备之前，仍然存在重大挑战。例如，能够在室温下创建和操纵skyrmionic自旋纹理对于进一步的技术应用非常重要，因为它们可以适应各种外部刺激，作为自旋电子器件中的信息载体。在这里，第一次观察skyrmionic磁泡与可变拓扑自旋纹理在室温下形成的挫果美Fe3Sn2磁体与单轴磁各向异性的报告。利用原位洛伦兹透射电子显微镜研究了磁化动力学，揭示了不同磁泡和畴之间的转换是通过由外加磁场驱动的布洛赫线的运动。这些结果表明，Fe3Sn2在室温下有利于对拓扑自旋织构的独特磁性控制，使其成为进一步基于skyrmion的自旋电子器件的有希望的候选者。
The quest for materials hosting topologically protected skyrmionic spin textures continues to be fueled by the promise of novel devices. Although many materials have demonstrated the existence of such spin textures, major challenges remain to be addressed before devices based on magnetic skyrmions can be realized. For example, being able to create and manipulate skyrmionic spin textures at room temperature is of great importance for further technological applications because they can adapt to various external stimuli acting as information carriers in spintronic devices. Here, the first observation of skyrmionic magnetic bubbles with variable topological spin textures formed at room temperature in a frustrated kagome Fe3Sn2 magnet with uniaxial magnetic anisotropy is reported. The magnetization dynamics are investigated using in situ Lorentz transmission electron microscopy, revealing that the transformation between different magnetic bubbles and domains is via the motion of Bloch lines driven by an applied external magnetic field. These results demonstrate that Fe3Sn2 facilitates a unique magnetic control of topological spin textures at room temperature, making it a promising candidate for further skyrmion‐based spintronic devices.