期刊
APPLIED SURFACE SCIENCE
卷 336, 期 -, 页码 278-282出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2014.12.026
关键词
Ultrafast pulsed laser deposition; Picosecond laser; High repetition rate pulses; SrTiO3 particle composed films
类别
资金
- DESMI [INFRASTRUCTURE/ ETPATH/0308/04]
- European Regional Development Fund
- European Social Fund
- Cohesion Fund
- Research Promotion Foundation of the Republic of Cyprus
SrTiO3 particle-composed films were grown on Si substrates via picosecond ultrafast pulsed laser deposition. We have investigated the effect of laser pulse repetition rate (0.2-8.2 MHz) and fluence (0.079-1.57 J cm(-2)) on the morphology, crystallinity and stoichiometry of the films. X-ray diffraction, energy dispersive X-ray spectroscopy and Rutherford backscattering spectroscopy measurements demonstrated that the as-grown films were nearly stoichiometric and composed of large particles when a pulse repetition rate of 0.2 MHz was employed. However, at the higher repetition rate of 8.2 MHz the particle size decreased and the stoichiometry was altered. Finally, we attribute the formation of micronsize particle-composed films to the slow translation speed in relation to the high pulse repetition rates (kHz-MHz regime). (C) 2014 Elsevier B.V. All rights reserved.
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