在 (110) 位的温度依赖的表面异位变化 长轴稀土铁花膜
Yixuan Song1, Katharina Lasinger1,2, Hao Tang1
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.
Small (Weinheim an der Bergstrasse, Germany)
|October 21, 2024
概括
在低对称性 (110) 方位上探索铁磁氧化物薄膜揭示了可调节的磁性异性质. 在欧铁 (EuIG) 和铁 (TmIG) 薄膜中的这种可调性是先进的旋转器件的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 这就是Spintronics.
背景情况:
- 铁磁氧化物薄膜对于自旋电子应用至关重要.
- 低对称的薄膜定向,如 (110),提供复杂的磁性异性质景观.
- 这些景观对于理解像旋转扭矩自动振荡和旋转超流动性这样的现象至关重要.
研究的目的:
- 为了研究欧铁石榴 (EuIG) 和铁石榴 (TmIG) 薄膜中的内平面 (IP) 和外平面 (OOP) 单轴异轴性能量.
- 分析这些薄膜中磁性异性质的厚度和温度依赖性.
- 探索低对称性导向铁磁膜作为新型自旋物理学的平台的潜力.
主要方法:
- 在加多 (GGG) 基板上,EuIG 和 TmIG 薄膜 (5-50 nm) 在以 (110) 方向的表面增长.
- 片的Pt封装. 这些片的封装.
- 斯宾霍尔磁电阻测量以确定IP和OOP异构性能量.
主要成果:
- Pt/EuIG/GGG 片呈现一个 (001) 容易磁化的平面.
- Pt/TmIG/GGG电影显示了一个 (001) 硬磁化平面与IP轻轴.
- 发现IP和OOP的表面异性质能量大小与散装异性质相比较.
- 表面异性质的温度依赖与简化的Néel表面异性质模型保持一致.
结论:
- 这项研究表明,在低对称性 (110) 方向上生长的铁磁氧化物中,可调节的磁性异性.
- 表面异构性起着重要作用,可以与散装异构性相比较.
- 这些发现在低对称基板上建立了铁磁氧化物薄膜,作为探索复杂的旋转纹理和旋转电子学动态的有希望的平台.
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