Preparation of LiTaO3 Nano-Crystalline Films by Sol-Gel Process

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Lithium tantalite (LiTaO3) thin film material shows good feasibility and potential for the application of high-performance detection system. In this paper, sol-gel process of LiTaO3 thin films on p-type (111) silicon substrates was described. Stable precursor solution with a desired viscosity was obtained using lithium acetate (LiAc) and tantalum ethoxide (Ta(OC2H5)5) as starting materials. Heat treatment process was optimized to fabricate LiTaO3 films of high crystallinity. Higher crystalline quality films were obtained when each spin-coating process was followed by an annealing operation. Microstructures and crystallization properties of LiTaO3 thin films were further studied. Nano-crystalline films were obtained after annealing at 700 °C for 5 min. The experimental results indicated that the crystallinity and mean grain size of LiTaO3 thin films were proportional to the film thickness.

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Periodical:

Key Engineering Materials (Volumes 531-532)

Edited by:

Chunliang Zhang and Liangchi Zhang

Pages:

446-449

Citation:

J. Gou et al., "Preparation of LiTaO3 Nano-Crystalline Films by Sol-Gel Process", Key Engineering Materials, Vols. 531-532, pp. 446-449, 2013

Online since:

December 2012

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$38.00

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