Abstract Flexible epitaxial magnetic oxide nanostructures with different electric and magnetic characteristics have attracted intensive explorations because of the potential applications in compact flexible devices. However, either expensive equipment or complicated processing is often indispensable in the traditional fabrication technology. Besides, there still lacks the report on high-quality metallic or half-metallic oxide nanocolumn arrays integrated on flexible substrates, which is one of the most important part in the future all-oxide nanostructure-based flexible spintronics. Herein, we demonstrate a spontaneous formation method to fabricate the epitaxial La0.67Sr0.33MnO3 nanocolumn films on flexible mica substrates with an SrTiO3 buffer layer. The morphology and density of the nanoscale columns can be easily tuned by changing the film thickness, which in turn influences the magnetic properties of the film. Under different levels of bending, the films exhibit morphology-dependent performance during the ferromagnetic resonance measurements. This study provides a viable route of fabricating tunable nanostructures for flexible spintronic devices with optimized performances.

中文翻译：

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自组装 La0.67Sr0.33MnO3 外延纳米柱薄膜面向未来的柔性自旋电子器件

摘要 具有不同电学和磁学特性的柔性外延磁性氧化物纳米结构因其在紧凑型柔性器件中的潜在应用而引起了广泛的探索。然而，在传统的制造技术中，昂贵的设备或复杂的工艺往往是必不可少的。此外，目前还缺乏关于集成在柔性基板上的高质量金属或半金属氧化物纳米柱阵列的报道，这是未来基于全氧化物纳米结构的柔性自旋电子学中最重要的部分之一。在此，我们展示了一种在具有 SrTiO3 缓冲层的柔性云母衬底上制造外延 La0.67Sr0.33MnO3 纳米柱薄膜的自发形成方法。通过改变薄膜厚度可以很容易地调整纳米柱的形态和密度，这反过来又会影响薄膜的磁性能。在不同程度的弯曲下，薄膜在铁磁共振测量过程中表现出依赖于形态的性能。这项研究为制造具有优化性能的柔性自旋电子器件的可调纳米结构提供了可行的途径。