Study on the Properties of Doped La in BaBi4Ti4O15 Ceramic

Abstract:

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BaBi4-xLaxTi4O15 (BBLT) ceramics were prepared by conventional solid phase sintering ceramics processing technology. The crystal structure and the microstructure were detected by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD analyses show that La3+ ions doping did not change the crystal structure of BBT ceramics. The sintering temperature increased from 1120°C to 1150°C with increasing Lanthanum content from 0 to 0.5, but it widened the sintering temperature range from 20°C to 50°C and refined the grain size of the BBT ceramic. Additionally, polarization treatment was performed and finally piezoelectric property was measured. As a result, the piezoelectric constant d33 of the 0.1at.% doped BBLT ceramics reached its highest value about 22pc/N at polarizing electric field of 8kV/mm and polarizing temperature of 120°C for 30min.

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

243-246

DOI:

10.4028/www.scientific.net/AMR.26-28.243

Citation:

X. H. Yang et al., "Study on the Properties of Doped La in BaBi4Ti4O15 Ceramic", Advanced Materials Research, Vols. 26-28, pp. 243-246, 2007

Online since:

October 2007

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Price:

$35.00

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