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引用次数: 0
摘要
我们研究了通过钕钇铝石榴石(Nd:YAG)脉冲激光沉积(PLD)技术在原子平的氧化锌(0001¯)O 面基底上同序长成的氧化锌薄膜极性表面的稳定性。对于在 500 至 700 °C 温度范围内生长的薄膜,离子散射光谱显示薄膜的表面终止与氧化锌基底相同。即使是 Mg0.2Zn0.8O/ZnO 超晶格,也没有发生极性反转,这表明 ZnO (0001¯) O 面高度稳定,尽管 Nd:YAG 激光产生的高动能脉冲激光沉积羽流会导致薄膜表面溅射。
Polarity of homoepitaxial ZnO films grown by Nd:YAG pulsed laser deposition
We investigate the stability of the polar surface of ZnO films grown homoepitaxially on atomically flat ZnO (0001¯) O-face substrates by neodymium yttrium aluminum garnet (Nd:YAG) pulsed laser deposition (PLD). For films grown in the temperature range from 500 to 700 °C, ion scattering spectroscopy showed that the film surface termination was the same as the ZnO substrate. Even for a Mg0.2Zn0.8O/ZnO superlattice, no polarity reversal occurred, indicating that the ZnO (0001¯) O-face is highly stable, despite the film surface sputtering caused by the high kinetic energy of the PLD plume generated by the Nd:YAG laser.
期刊介绍:
The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research.
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