应变诱导的坚固交换偏差效应在长轴La0.7Sr0.3MnO3/LaFeO3 Bilayers中的影响
Jun Zhang1, Tiancong Su2,3, Jianchun Ma1
1Department of Chemical & Material Engineering, Lyuliang University, Lishi 033001, China.
Molecules (Basel, Switzerland)
|July 27, 2024
概括
基板应变控制复杂的氧化物薄膜中的界面磁矩. 压缩应变诱导了对线对齐,增强了自旋电子设备的交换偏差.
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:
- 复杂氧化物中的相关电子行为可以通过表轴应变进行调整.
- 应变工程为自旋电子应用提供了通往新奇现象的途径.
研究的目的:
- 为了研究基板诱导的应变对铁磁 (FM) /反铁磁 (AFM) 接口上的磁矩合的影响.
- 为了了解压力如何影响LaFeO3/La0.7Sr0.3MnO3异构结构中的交换偏差.
主要方法:
- 在不同的基板 (LaAlO3和SrTiO3) 上,AFM LaFeO3 (LFO) 和FM La0.7Sr0.3MnO3 (LSMO) 双层的表轴生长.
- 磁性属性的表征,专注于交换偏差场变化.
- 在不同的应变条件下对磁矩对齐的分析.
主要成果:
- 在LaAlO3 (LAO) 基板上生长的二层层表现出比SrTiO3.3上的更大的交换偏差场.
- 来自LAO基板的大压力应变诱导了磁矩对齐从垂直到对直线的过渡.
- 在LSMO/LFO接口上的对直线磁矩导致了强大的交换合和显著的交换偏差效应.
结论:
- 基板诱导的应变是控制界面磁性合模式的关键因素.
- 应变工程提供了一种可行的方法来操纵FM/AFM接口上的磁矩方向.
- 这种方法增强了生成交换偏差的方法,这对于自旋电子设备开发至关重要.
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