Piezoelectric Properties of SrBi4Ti4O15 Ferroelectric Ceramics

The dynamic piezoelectric response of SrBi4Ti4O15 ceramics with Aurivillius structure was investigated at high alternating stress, low frequencies (0.01 to 100 Hz), and temperatures from 20 to 200 degreesC. The piezoelectric nonlinearity, observed only at high pressures (>10 MPa) and elevated temperatures (>150 degreesC), is interpreted in terms of contributions from non-180degrees domain walls. At weak fields, the frequency dependence of the longitudinal piezoelectric coefficient was explained in terms of Maxwell-Wagner piezoelectric relaxation. The Maxwell-Wagner units are identified as colonies that consist of highly anisotropic grains which sinter together, and whose distribution in the ceramic is strongly dependent on sintering conditions.


Published in:
Journal of Materials Research, 17, 6, 1376-1384
Year:
2002
Publisher:
Cambridge, Cambridge University Press
ISSN:
0884-2914
2044-5326
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Note: The status of this file is: Anyone


 Record created 2019-08-23, last modified 2020-05-19

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