Changes in Ferroelectric Properties of 0.7PMN–0.3PT Ceramic with Compressive Stress

Abstract:

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In this work, effects of compressive stress on the ferroelectric properties of 0.7PMN–0.3PT ceramics were investigated. The ceramics with the formula (0.7)Pb(Mg1/3Nb2/3)O3-(0.3)PbTiO were prepared by a conventional mixed-oxide method. The ferroelectric properties under compressive stress were observed at stress up to 80 MPa using a compressometer in conjunction with a modified Sawyer-Tower circuit. The results showed that applied stress had a significant influence on the ferroelectric properties of 0.7PMN–0.3PT ceramics. Ferroelectric characteristics, i.e. the area of the ferroelectric hysteresis (P-E) loop, the saturation polarization (Psat), the remanent polarization (Pr) and loop squareness (Rsq), decreased with increasing compressive stress, while the coercive field (Ec) remained relatively constant. Stress-induced domain wall motion suppression and non-180oC ferroelectric domain switching processes are responsible for the changes observed.

Info:

Periodical:

Advanced Materials Research (Volumes 55-57)

Main Theme:

Edited by:

Tawee Tunkasiri

Pages:

277-280

DOI:

10.4028/www.scientific.net/AMR.55-57.277

Citation:

M. Unruan et al., "Changes in Ferroelectric Properties of 0.7PMN–0.3PT Ceramic with Compressive Stress", Advanced Materials Research, Vols. 55-57, pp. 277-280, 2008

Online since:

August 2008

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$35.00

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