轻磁化轴的倾斜方向的BaM六矿薄膜:晶体结构和磁性特性
Boris Krichevtsov1, Alexander Korovin1, Vladimir Fedorov2
1Ioffe Institute, Politechnicheskaya 26, 194021 St. Petersburg, Russia.
Nanomaterials (Basel, Switzerland)
|December 17, 2024
概括
在蓝宝石基板上生长了薄M型六化薄膜. 该研究揭示了一个倾斜的轻松磁化轴,这对于理解它们的磁性行为和潜在应用至关重要.
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
- 磁力学 磁力学 是一种
背景情况:
- M型六聚 (BaFe12O19) 是一个有前途的材料用于磁性应用.
- 薄膜的表轴生长对于控制材料特性至关重要.
- 了解磁性异构性是设备性能的关键.
研究的目的:
- 在蓝宝石基板上使用激光分子束表达式生长细的BaM六化薄膜.
- 为了研究成长的薄膜的结构和磁性特性.
- 为了展示两阶段生长协议的优势.
主要方法:
- 激光分子光束表达膜沉积的作用.
- 原子力显微镜,RHEED和X射线衍射用于结构和形态分析.
- 磁光学和磁力测量技术用于磁性特性表征.
主要成果:
- BaFe12O19膜在α-Al2O3 (蓝宝石) 基板上的表层生长.
- 密集的岛屿的识别,与基板的表轴结合.
- 从薄膜正常的角度确定一个倾斜的磁化轻轴 (φ~60°).
- 对磁性歇斯底里循环的观察,这些循环取决于在平面内和平面外的磁场.
- 通过取决于角度的hysteresis测量来确认倾斜的轻松轴方向.
- 归因于可逆旋转和不可逆转的域壁运动的磁化曲线.
结论:
- 一个两阶段的生长协议为制造高质量的BaM六化膜提供了优势.
- 片呈现出明显倾斜的轻松磁化轴.
- 观察到的磁性行为与倾斜的异构相一致,为新的磁性设备设计铺平了道路.
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