单临床VO2的Epitaxy在Large-Misfit 3m模板上,由一个元稳定接口层启用
Zhiwei Zhang1,2, Xingxing Li1, Yong Cheng2,3
1School of Electronic and Information Engineering, Wuyi University, Jiangmen 529020, Guangdong, China.
ACS omega
|July 22, 2024
概括
在铁酸盐 (CoFe2O4) 模板上的二氧化瓦纳 (VO2) 薄膜的长轴生长利用了转移稳定的正交相来减少应变. 这在VO2膜中促进了低温金属到绝缘体的过渡.
科学领域:
- 材料科学 材料科学 材料科学
- 薄膜Epitaxy是一种薄膜.
- 阶段过渡 阶段过渡 阶段过渡
背景情况:
- 二氧化瓦纳 (VO2) 呈现出一种关键的金属到绝缘体过渡 (MIT),在电子和温度计方面具有潜在的应用.
- VO2膜的表轴生长对于控制其特性至关重要,但晶格不匹配往往会导致应变和缺陷.
- 铁酸盐 (CoFe2O4) 是一种磁绝缘体模板,具有异构结构集成的潜力.
研究的目的:
- 在CoFe2O4 ((111) 基板上实现单临床VO2薄膜的表轴生长.
- 为了研究界面转移稳定或形VO2阶段在菌株管理中的作用.
- 描述已成长的VO2膜的金属到绝缘体的过渡行为.
主要方法:
- 在CoFe2O4 ((111) 基板上VO2薄膜的表轴生长.
- 使用技术来确认原子度和格子匹配的接口表征.
- 第一个原则计算,以确定成长过程中的相位稳定性和应变效应.
- 电传输测量以研究金属到绝缘体的过渡.
主要成果:
- 在CoFe2O4{\displaystyle CoFe2O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4}{\displaystyle CoFe4O4O4}{\displaystyle CoFe4O4O4}{\displaystyle CoFe4O4O4}}{\displaystyle CoFe4O4O4}{\displaystyle CoFe4O4O4O4}{\displaystyle CoFe4O4O4O4}}上,通过一个中间的方形方形VO2层成功地增长了.
- 在Orthorhombic VO2和CoFe2O4之间的原子敏接口,扩散最小.
- 正体VO2层显著降低了随后的单临床VO2上层的平面不适应应变.
- 第一个原则的计算支持在初始生长阶段偏好 Orthorhombic VO2.
- 大量单临床VO2阶段在8nm左右的薄膜厚度上受到青.
- VO2上层表现出由温度和朱尔自热触发的金属到绝缘体的过渡.
结论:
- 一个界面的正方形VO2层是有效的缓解应变在CofE2O4上的单临床VO2的表轴生长期间的应变.
- 这种应变工程方法可以形成高质量的VO2膜,具有可调节的金属到绝缘体过渡特性.
- 这些发现为开发电子应用先进的基于VO2的异构结构提供了途径.
相关概念视频
Pinching-off of Coated Vesicles
3.1K
Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
3.1K
Crystal Growth: Principles of Crystallization
1.8K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
1.8K


