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相关概念视频

Atomic Nuclei: Types of Nuclear Relaxation01:28

Atomic Nuclei: Types of Nuclear Relaxation

383
Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...
383

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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
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在氧化物V2O3薄膜中量化快速结构松

P Rajak1,2,3, S K Chaluvadi1, S Punathum Chalil1,2

  • 1CNR-IOM Istituto Officina dei Materiali, 34149 Trieste, Italy.

The Journal of chemical physics
|August 22, 2025
PubMed
概括
此摘要是机器生成的。

由于脱位形成,氧化物薄膜在接口附近的结构迅速放松. 了解这一过程是优化氧化物 (V2O3) 装置的关键.

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科学领域:

  • 材料科学
  • 固态物理
  • 薄膜技术

背景情况:

  • 氧化物 (V2O3) 在电阻切换,能量储存和催化等设备中具有显著的技术潜力.
  • 了解V2O3薄膜的结构放松动态对于在功能设备中充分发挥其潜力至关重要.

研究的目的:

  • 研究V2O3薄膜中的快速结构放松现象.
  • 分析V2O3薄膜的界面质量,结构变化和化学组成.

主要方法:

  • 使用Nd:YAG脉冲红外激光源的脉冲激光沉积 (PLD) 技术.
  • 传输电子显微镜 (TEM) 图像的定量分析.
  • 应变分析以研究结构松机制.

主要成果:

  • 在V2O3薄膜中的结构松在距离薄膜-基板接口的前4nm内迅速发生.
  • 放松机制包括在接口附近形成的位移.
  • 在薄膜-基板接口的增强应变合驱动了放松行为.

结论:

  • V2O3的强相关金属相对晶体缺陷和结构障碍很敏感.
  • 表面放松动力学显著影响V2O3薄膜的特性.
  • 了解这些动态对于设计和优化基于V2O3的功能设备至关重要.