Unique Pulsed-Laser Deposition Production of Anatase and Rutile TiO<sub>2</sub>on Al<sub>2</sub>O<sub>3</sub>

• 作者: Alexandra Gordienko Anthony B. Kaye
• 来源期刊: 晶体结构理论与应用(英文)
• 学科: 化学
• 关键词: TITANIA ANATASE RUTILE SAPPHIRE PLD
• 年，卷（期）: 2018,（2）
• 页码范围: 19-31
• 页数: 13页
• 分类号: O6

摘要

Two pure hexagonal phases of titanium dioxide, anatase and rutile, were grown on c-cut Al2O3 substrates via pulsed-laser deposition by changing only the growth and annealing conditions, but without changing the substrate, target, or working gas. Purity of each phase was confirmed by x-ray diffraction, the quality of each film was studied using atomic force microscopy and scanning electron microscopy, and the interface between each substrate and film was studied using x-ray photoelectron spectroscopy. A binding layer of Ti2O3 was found to explain anatase growth under the very large lattice mismatch conditions.