STRUCTURAL-PROPERTIES OF LINBO3 THIN-FILMS GROWN BY THE PULSED-LASER DEPOSITION TECHNIQUE

被引:27
作者
AUBERT, P
GARRY, G
BISARO, R
LOPEZ, JG
机构
[1] UNIV PARIS 06,PHYS SOLIDES LAB,F-75005 PARIS,FRANCE
[2] UNIV PARIS 07,PHYS SOLIDES LAB,F-75005 PARIS,FRANCE
关键词
D O I
10.1016/0169-4332(94)00404-8
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
LiNbO3 thin films have been deposited onto R-cut and C-cut single crystalline sapphire substrates (alpha-Al2O3, (1 $($) over bar$$ 102) and (0001)) by the pulsed laser deposition technique at different oxygen pressures and substrate temperatures. Thin film composition and structure have been determined using Rutherford backscattering spectroscopy (RES) and X-ray diffraction experiments. The atomic composition is dependent on the oxygen pressure in the range 0.5-1.3 mbar. At pressures lower than 1.3 mbar, we have observed a deviation from the stoichiometry. Nearly stoichiometric thin films have been obtained for a pressure equal to 1.3 mbar. For that pressure, the atomic composition does not depend on the substrate temperature in the range 650-800 degrees C. Under optimised conditions the (1 $($) over bar$$ 102) and (0001) preferential orientations of growth have been obtained on (1 $($) over bar$$ 102) and (0001) sapphire substrates, respectively.
引用
收藏
页码:144 / 148
页数:5
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