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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 307Voltage Switch of Nano-Size Zinc Oxide Ceramic...

Voltage Switch of Nano-Size Zinc Oxide Ceramic Defected Barium

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Abstract:

Two samples of ZnO doped Ba with the chemical composition, 97ZnO-3BaO, have been prepared via oxalate co-precipitation. During precipitation the first sample, A, was stirred by magnetic stirrer while the second sample, B, was stirred via 40KHz ultrasonic wave. The obtained powders were decomposed at 400°C for 3h, then pressed and sintered at 1200°C for 1.5h. Then XRD, SEM and J-E measurements were performed and analysed. The grain sizes of the obtained ceramics were (0.5-2.26) µm and (80-119) nm for samples A and B, respectively. The J-E measurements revealed that the obtained ceramic has voltage switching characteristics, and that the switching voltage could be controlled by the stirring process.

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Periodical:

Defect and Diffusion Forum (Volume 307)

Pages:

21-26

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.307.21

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Online since:

December 2010

Authors:

M. El-Hofy, A.H. Salama

Keywords:

Ba Doping, Magnetic Stirring, Microstructure, Ultrasonic Stirring, Voltage Switching Characteristics, Zinc Oxide (ZnO)

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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