镧修饰钛酸铅薄膜的制备与表征

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI:10.1109/ISAF.1996.598144

M. Algueró, L. Pardo, M. Calzada

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引用次数: 1

摘要

采用溶胶-凝胶法制备了镧修饰钛酸铅(PTL)铁电薄膜。在热处理过程中，不同的加热速率可获得不同的显微组织。通过铁电迟滞回线、脉冲响应和交流电流密度测量来研究薄膜的电学行为。发现传导是不可忽略的。当加热速率大于500/spl°C/min时，薄膜的可开关极化和矫顽力场均高于加热速率为10/spl°C/min的薄膜。

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Preparation and characterization of lanthanum-modified lead titanate thin films

Lanthanum-modified lead titanate (PTL) ferroelectric thin films are prepared by a recently developed diol-based sol-gel route. Different microstructures are obtained by varying the heating rate during the thermal treatment. Ferroelectric hysteresis loops, pulse response and a.c. current density measurements are carried out to study the thin film electrical behaviour. Conduction is found to be non-negligible. Switchable polarization and coercive field are higher in films heated at a rate higher than 500/spl deg/C/min than in those heated at 10/spl deg/C/min.

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ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics

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