Barium hexaferrite/muscovite heteroepitaxy with mechanically robust perpendicular magnetic anisotropy
Barium hexaferrite/muscovite heteroepitaxy with mechanically robust perpendicular magnetic anisotropy
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DOI：
10.1038/s41528-021-00130-y
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发表时间：
2021-12
影响因子：
14.6
通讯作者：
Wei‐En Ke;P. Shao;C. Kuo;Haili Song;Rong Huang;N. Yagi;T. Kimura;Y. Bitla;Chun-Fu Chang;Y. Chu
中科院分区：
文献类型：
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作者：
Wei‐En Ke;P. Shao;C. Kuo;Haili Song;Rong Huang;N. Yagi;T. Kimura;Y. Bitla;Chun-Fu Chang;Y. Chu
在磁存储器件的设计和开发方面的最新进展导致了对具有垂直磁各向异性(PMA)特性的材料的巨大兴趣。在过去的十年里，显示器、电路板、电池、存储器等柔性设备的发展取得了巨大的增长，因为它们逐渐影响了人们的生活。因此，PMA材料与柔性衬底的集成将有利于柔性磁性器件的发展。在本研究中，我们开发了BaFe12O19(BAM)/白云母的异质外延，它既具有机械柔性，又具有PMA性质。用振动样品磁强计、磁力显微镜和X射线吸收光谱对PMA的特殊性质进行了表征。为了量化该体系的磁各向异性，得到了本征磁各向异性能量密度为2.83 Merg cm−3。此外，异质结还具有良好的抗机械弯曲性能。这项关于BAM/白云母异质外延的研究结果对下一代柔性磁记录设备和致动器的研究具有重要的意义。
Recent advances in the design and development of magnetic storage devices have led to an enormous interest in materials with perpendicular magnetic anisotropy (PMA) property. The past decade has witnessed a huge growth in the development of flexible devices such as displays, circuit boards, batteries, memories, etc. since they have gradually made an impact on people’s lives. Thus, the integration of PMA materials with flexible substrates can benefit the development of flexible magnetic devices. In this study, we developed a heteroepitaxy of BaFe12O19(BaM)/muscovite which displays both mechanical flexibility and PMA property. The particular PMA property was characterized by vibrating sample magnetometer, magnetic force microscopy, and x-ray absorption spectroscopy. To quantify the PMA property of the system, the intrinsic magnetic anisotropy energy density of ~2.83 Merg cm−3was obtained. Furthermore, the heterostructure exhibits robust PMA property against severe mechanical bending. The findings of this study on the BaM/muscovite heteroepitaxy have several important implications for research in next-generation flexible magnetic recording devices and actuators.