Internal friction in hard and soft PZT-based ceramics

Two commercial ceramics, PZT TRS100 and PZT TRS600, PZT ceramics with various dopants, were used. Internal friction and elastic modulus measurements were performed versus temperature at different frequencies. Considering the hard ceramic, two relaxation peaks (R1, R2) related to oxygen vacancies-dom...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2004-09, Vol.24 (10-11), p.2989-2994
Main Authors: FRAYSSIGNES, H, GABBAY, M, FANTOZZI, G, PORCH, N. J, CHENG, B. L, BUTTON, T. W
Format: Article
Language:English
Subjects:
Anelasticity, internal friction, stress relaxation, and mechanical resonances
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Condensed matter: structure, mechanical and thermal properties
Electrotechnical and electronic ceramics
Engineering Sciences
Exact sciences and technology
Materials
Mechanical and acoustical properties of condensed matter
Physics
Technical ceramics
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Summary:Two commercial ceramics, PZT TRS100 and PZT TRS600, PZT ceramics with various dopants, were used. Internal friction and elastic modulus measurements were performed versus temperature at different frequencies. Considering the hard ceramic, two relaxation peaks (R1, R2) related to oxygen vacancies-domain walls interaction were observed similarly to undoped PZT ceramics. In addition, a phase transition peak (P1) occurs at the Curie temperature. Considering the soft ceramic, only two phase transition peaks were observed. The increase of modulus associated with the phase transition internal friction peak occurs at the Curie temperature in both samples. The effects of some dopants are investigated. Some of them influence either the concentration of oxygen vacancies or the domain structure. 20 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2003.10.048