在具有原子厚度的合成Co9Se8纳米片中半金属铁磁
Xiaodong Zhang1, Jiajia Zhang, Jinyang Zhao
1Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
Journal of the American Chemical Society
|July 12, 2012
概括
合成无层材料的原子厚纳米片是很困难的. 研究人员为旋转器件创建了二维 (2D) 化 (Co(9) Se(8)) 纳米板,表现出半金属铁磁性.
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
- 纳米技术纳米技术
背景情况:
- 从无层材料中控制原子厚的纳米薄膜的合成是具有挑战性的,因为缺乏内在的异性质增长驱动因素.
- 二维 (2D) 纳米板表现出独特的电子和物理特性,与其散装对应物有所区别.
研究的目的:
- 开发一种用于合成无层材料的原子厚纳米片的方法.
- 为了研究这些新的二维结构的特性.
- 探索它们在自旋电子学中的潜在应用.
主要方法:
- 通过建构块的定向连接,对二维 (2D) 纳米板进行可控合成.
- 单晶化 (Co(9) Se(8)) 纳米片的表征.
- 实验测量和理论计算以确定磁性和电子性质.
主要成果:
- 成功合成了原子厚的单晶Co(9) Se(8) 纳米薄膜,具有独特的层状堆叠.
- 在Co(9) Se(8) 纳米片中观察到内在的半金属铁磁性.
- 实验和理论数据证实了这些发现.
结论:
- 定向附着是一种有效的策略,可以从无层材料中实现2D纳米板.
- 原子厚的纳米薄膜是新的半金属铁磁系统的有希望的候选者.
- 这项研究为设计超薄,灵活,类似纸张的自旋电子设备铺平了道路.
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