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Proceedings Paper

Na0.5Bi0.5TiO3-based ferroelectric thin films
Author(s): Zh. Wang; Ch. H. Yang; H. Z. Xu; L. J. Qin; Y. G. Yang
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Paper Abstract

Sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT) is considered to be an excellent candidate for a lead-free piezoelectric material from the viewpoint of environmental protection. The optimum temperature of crystallinity is 650°C. The films exhibit a well-defined hysteresis loop with a remnant polarization 2Pr of about 1 μC/cm2 and a coercive voltage Vc of approximately 0.9V. The films also show good insulating property at room temperature. The high frequency C-V curve is indicative of good film/substrate interface characteristic. The fixed charge density (Nfc) and the surface state density (Nss) are considered to be adequate for a ferroelectric field effect transistor operation. Electrical measurements results show that this kind of films have a potential practice for device applications such as memory and switching devices.

Paper Details

Date Published: 23 January 2006
PDF: 5 pages
Proc. SPIE 6029, ICO20: Materials and Nanostructures, 60290U (23 January 2006); doi: 10.1117/12.667710
Show Author Affiliations
Zh. Wang, Yantai Univ. (China)
Shandong Univ. (China)
Ch. H. Yang, Shandong Univ. (China)
H. Z. Xu, Yantai Univ. (China)
L. J. Qin, Yantai Univ. (China)
Y. G. Yang, Shandong Univ. (China)

Published in SPIE Proceedings Vol. 6029:
ICO20: Materials and Nanostructures
Wei Lu; Jeff Young, Editor(s)

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