Pulsed laser deposition of PLZT films: structural and optical characterization

被引:42
作者
Gaidi, M
Amassian, A
Chaker, M
Kulishov, M
Martinu, L
机构
[1] INRS Energie, Varennes, PQ J3X 1S2, Canada
[2] Ecole Polytech, Dept Genie Phys, Montreal, PQ H3C 3A7, Canada
[3] Adtek Photomask Inc, Montreal, PQ H4T 1J6, Canada
关键词
PLZT (9/65/35); PLD; XRD; surface morphology; electro-optic;
D O I
10.1016/j.apsusc.2003.10.037
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Transparent lanthanum-modified lead zirconate titanate (PLZT) thin films with electro-optic properties were deposited on indium-doped tin oxide (ITO) coated glass by pulsed laser deposition (PLD). Stoichiometric films with the crystallographic perovskite structure required for electro-optical behaviour, and a composition ratio close to 9/65/35 were obtained. The microstructural, optical and electro-optic properties of these films were studied for different substrate temperatures, T-s, and reactor oxygen pressure, P-O2 The films annealed at 700 degreesC in oxygen at atmospheric pressure are highly (I 10) perovskite orientated and free of the undesired pyrochlore phase. The optical constants (n and k as a function of wavelength) of the films were obtained using variable angle spectroscopic ellipsometry (VASE) and spectrophotometry in the UV-Vis-NIR regions. They appear to be strongly depending on the deposition conditions. A high quadratic electro-optic coefficient, close to that of the bulk value, was obtained at 632.8 nm by single-beam (ellipsometric) configuration. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:347 / 354
页数:8
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