期刊
APPLIED PHYSICS LETTERS
卷 102, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4795784
关键词
-
资金
- National Science Foundation [0645312, 1234872]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1234872] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0645312] Funding Source: National Science Foundation
Aluminum scandium nitride (Al1-xScxN) layers deposited by reactive magnetron co-sputtering on sapphire 0001 substrates at 850 degrees C are epitaxial single-crystals for x <= 0.20. Their in-plane lattice constant increases linearly (3.111 + 0.744x angstrom) while the out-of-plane constant remains at 4.989 + 0.005 angstrom. Optical absorption indicates a band gap of 6.15-9.32x eV and a linearly increasing density of defect states within the gap. The average bond angle decreases linearly with x, suggesting a trend towards the metastable hexagonal-ScN structure. However, an anomalous decrease at x = 0.20 indicates a structural instability which ultimately leads to phase separated rock-salt ScN grains for x > 0.4. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4795784]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据