Chemistry and structure of BaTiO3 ultra-thin films grown by different O2 plasma power
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Chemistry and structure of BaTiO3 ultra-thin films grown by different O2 plasma power
- 发表刊物：
- Chemical Physics Letters
- 摘要：
- We present a study of the chemical and atomic properties of 5 nm TiO2-terminated BaTiO3 (0 0 1) epitaxial films on Nb-doped SrTiO3, as a function of the atomic oxygen plasma power for film growth. Lower plasma power produces non-stoichiometric films with oxygen vacancies and Ti3+ ions. The larger Ti3+ ion radius and the in-plane clamping gives rise to an increase in the out-of-plane lattice parameter. XPS measures the Ti3+ concentration and the concomitant increase in dissociative water uptake in the film, giving rise to on-top OH− adsorption on surface Ti, proton adsorption on surface oxygen, and a near surface Ba-OH environment.
- 合写作者：
- J.L. Wang · J. Leroy · G. Niu · [...]
- 是否译文：
- 否
- 发表时间：
- 2014-01-30