Rapid thermally processed ferroelectric Bi4Ti3O12thin films
作者:
P. C. Joshi,
S. B. Krupanidhi,
Abhai Mansingh,
期刊:
Journal of Applied Physics
(AIP Available online 1992)
卷期:
Volume 72,
issue 11
页码: 5517-5519
ISSN:0021-8979
年代: 1992
DOI:10.1063/1.351949
出版商: AIP
数据来源: AIP
摘要:
Polycrystalline Bi4Ti3O12thin films having perovskite structure were successfully produced on platinum coated silicon substrates by the sol‐gel technique. Crack‐free and crystalline films of 5000 A˚ thickness were fabricated by spinning and post‐deposition rapid thermal annealing treatment at 500 °C for 20 s. The films exhibited good structural, dielectric, and ferroelectric properties. The measured dielectric constant and loss factor at a frequency of 100 kHz were 180 and 0.014 and remanent polarization and coercive field were 5.4 &mgr;C/cm2and 135 kV/cm, respectively. The films showed good switching endurance under bipolar stressing at least up to 1010cycles.
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