Huang Jijie, Wang Han, Wang Xuejing, Gao Xingyao, Liu Juncheng, Wang Haiyan
School of Materials, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China.
School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States.
ACS Appl Mater Interfaces. 2020 Sep 2;12(35):39920-39925. doi: 10.1021/acsami.0c12935. Epub 2020 Aug 20.
Flexible electronics integrating spintronics are of great potential in the areas of lightweight and flexible personal electronics. The integration of ferromagnetic and other functional oxides on flexible mica substrates is crucial for the proposed computer technology. In this work, we demonstrate the successful integration of a ferromagnetic-antiferromagnetic nanocomposite of LaSrMnO (LSMO)/NiO with unique perpendicular exchange bias properties on a flexible mica substrate. Utilization of multiple sets of buffer layers has been attempted to overcome the large mismatch between the film and the substrate and to achieve high-quality nanocomposite growth on mica. Exchange bias of ∼200 and ∼140 Oe for the applied magnetic field perpendicular and parallel to the film surface, respectively, has been achieved and attributed to the strongly coupled vertical ferromagnetic/antiferromagnetic interfaces. Such nanocomposite thin films exhibit excellent structural robustness and reliability under a cyclic bending test. This work demonstrates the enormous potential of integrating complex two-phase multifunctional oxides on mica for future flexible wearable personal devices.
集成自旋电子学的柔性电子产品在轻质和柔性个人电子产品领域具有巨大潜力。在柔性云母基板上集成铁磁和其他功能氧化物对于所提出的计算机技术至关重要。在这项工作中，我们展示了在柔性云母基板上成功集成具有独特垂直交换偏置特性的LaSrMnO（LSMO）/NiO铁磁-反铁磁纳米复合材料。已尝试使用多组缓冲层来克服薄膜与基板之间的巨大失配，并在云母上实现高质量的纳米复合材料生长。对于垂直于和平行于薄膜表面施加的磁场，分别实现了约200 Oe和约140 Oe的交换偏置，这归因于强耦合的垂直铁磁/反铁磁界面。这种纳米复合薄膜在循环弯曲测试下表现出优异的结构稳健性和可靠性。这项工作展示了在云母上集成复杂的两相多功能氧化物用于未来柔性可穿戴个人设备的巨大潜力。
