在二维1T-MX2单层中具有可调节的磁晶异性质的内在铁磁性
Yonghao Wang1, Zesen Lei1, Meng Guo2
1School of Science, Shandong Jianzhu University, Jinan, Shandong 250101, China. long.q.sun@gmail.com.
Physical chemistry chemical physics : PCCP
|November 7, 2023
概括
本研究探讨了用于先进数据存储的二维铁磁材料. 研究人员发现,应变和兴奋剂可以调整它们的磁性,为高效的记忆器件提供对磁晶异构 (MCA) 的控制.
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
- 固态化学 固态化学
背景情况:
- 二维 (2D) 铁磁材料对于下一代数据存储和信息设备至关重要,因为它们具有可调的磁晶异性 (MCA).
- 了解这些材料的电子和磁性质是释放它们全部潜力的关键.
研究的目的:
- 系统地研究1T-MX2 (M = Cr, Mn, Fe, Co; X = As, Sb) 单层的电子和磁性特性.
- 为了识别稳定的二维铁磁体并确定它们的MCA能量.
- 探索双轴应变和载体兴奋剂对磁性行为和MCA的影响.
主要方法:
- 使用第一原理计算,系统地研究电子和磁性特性.
- 该研究侧重于1T-MX2单层,分析它们的稳定性,铁磁状态和MCA能量.
- 研究了双轴应变和载体兴奋剂对MCA的影响.
主要成果:
- 在1T-MX2家族中确定了稳定的2D铁磁单层.
- 发现双轴应变和载体兴奋剂显著影响磁性行为和MCA.
- 三个铁磁单层呈现可调节的MCA,可通过菌株类型和兴奋剂水平进行控制.
- 在M-衍生的3d状态和旋转轨道合 (SOC) 能量的变化被确定为MCA修改背后的主要机制.
结论:
- 应变和载体兴奋剂为控制1T-MX2材料中的二维磁性提供了有效的策略.
- 这些可调节的2D铁磁材料显示出设计高效的存储器件的前景.
- 这些发现提供了对用于先进的自旋电子应用的MCA操纵的见解.
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