提高域壁热切换和动力学在垂直磁性无极性纳米线用于可靠的spintronic内存的动力学
Mohammed Al Bahri1, Salim Al-Kamiyani1
1Department of Basic and Applied Sciences, A'Sharqiyah University, P.O. Box 42, Ibra 400, Oman.
Nanomaterials (Basel, Switzerland)
|October 28, 2025
概括
旋转器件中的域壁通过增加材料特性,如单轴异轴性能量和和磁化等来稳定. 更宽或更厚的纳米线也提高了热稳定性,可靠的数据存储.
科学领域:
- 这就是Spintronics.
- 材料科学 材料科学 材料科学
- 计算物理 计算物理
背景情况:
- 在垂直磁化异构 (PMA) 纳米线中域壁 (DWs) 的随机热切换挑战了自旋电子存储设备的可靠性.
- 了解热核和DWs的动态对于设备性能至关重要.
研究的目的:
- 调查设备温度对PMA纳米线DW行为的影响.
- 分析材料性质 (无轴异极性能量,和磁化) 和几何学对DW热稳定性的影响.
主要方法:
- 利用微磁模拟来建模DW热核和动力学.
- 专注于变化的设备温度,单轴异极性能量 (Ku),和磁化 (Ms) 和纳米线几何.
主要成果:
- 增加的Ku或Ms显著降低了DW热切换,提高了热稳定性和核化温度 (Tn).
- 更宽或更厚的纳米线减少热诱导的DW创建,进一步提高稳定性.
- DW速度表现出热辅助运动,随温度增加.
结论:
- 较大的Ku和Ms值提高了PMA纳米线中的DW热稳定性.
- 优化纳米线几何 (宽度,厚度) 提高了对热波动的抗性.
- 这些发现为设计更强大的基于PMA的内存设备提供了指导.
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