在多谷物La0.66Sr0.34MnO3薄膜上的场和角度依赖的交流敏感性在YSZ(001) 基板上
Gražina Grigaliūnaitė-Vonsevičienė1, Artūras Jukna2
1Department of Physics, Faculty of Fundamental Sciences, Vilnius Gediminas Technical University (Vilnius Tech), LT-10223 Vilnius, Lithuania.
Materials (Basel, Switzerland)
|January 28, 2026
概括
研究人员使用AC易感性研究了多谷物兰坦 strontium manganite (La0.66Sr0.34MnO3) 薄膜. 他们确定了三个在平面内容易磁化轴,影响磁性行为,这对于自旋电子设备应用至关重要.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 薄膜磁性 薄膜磁性 薄膜磁性
背景情况:
- 多颗粒薄膜具有复杂的磁性特性,受颗粒的方向和异性质的影响.
- 兰石 (La0.66Sr0.34MnO3) 由于其可调节的磁性特性,是旋转电子学中的一个关键材料.
- 了解薄膜磁化动态对于开发先进的磁器件至关重要.
研究的目的:
- 通过实验和数量研究多谷物La0.66Sr0.34MnO3薄膜的交流敏感性.
- 为了确定在平面内轻松磁化的轴数和方向.
- 阐明颗粒结构,磁化动态和交流易感性之间的关系.
主要方法:
- 射频 (RF) 磁铁子喷射用于在YSZ001) 基板上生长250nm的La0.66Sr0.34MnO3膜.
- 现场和角度依赖的AC易感度测量在78K进行.
- 采用了基于异性变异常数的横向易感性理论的数值建模.
主要成果:
- 片显示了一个柱状结构,有 (001) - 和 (011) - 面向的粒.
- 交流电感应度测量显示,由于三种不同的平面内轻松磁化的轴而导致的异常.
- 数字建模验证了实验结果,并解释了磁化切换行为.
结论:
- 这项研究在La0.66Sr0.34MnO3/YSZ(001) 薄膜中定量确定了三个平面内容易磁化的轴.
- 这些轴显著影响多粒度薄膜的磁化动态.
- 这些发现表明在磁性内存,自旋电子设备和磁传感方面有潜在的应用.
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