Influence of the niobium dopant concentration on the Pb(Zr0.54Ti0.46)O3 ceramics sintering and final properties
The effect of niobium doping on the structure and properties of piezoelectric PZT ceramics is studied. Samples of the system Pb(Zr0.54Ti0.46)O3 + x wt % Nb2O5, (x = 0.2, 0.4, 0.6, 0.8, 1.0) were obtained by calcination of mixed oxides and subsequent sintering. Structural analysis (XRD and Optical Mi...
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2000 |
| País: | México |
| Recursos: | Centro de Investigación en Materiales Avanzados |
| Repositorio: | Fuente de Objetos Científicos Open Access del CIMAV |
| Idioma: | inglés |
| OAI Identifier: | oai:cimav.repositorioinstitucional.mx:1004/563 |
| Acesso em linha: | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/563 |
| Access Level: | acceso abierto |
| Palavra-chave: | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/23 |
| Resumo: | The effect of niobium doping on the structure and properties of piezoelectric PZT ceramics is studied. Samples of the system Pb(Zr0.54Ti0.46)O3 + x wt % Nb2O5, (x = 0.2, 0.4, 0.6, 0.8, 1.0) were obtained by calcination of mixed oxides and subsequent sintering. Structural analysis (XRD and Optical Microscopy) was carried out. All compositions lead to single-phase tetragonal samples. As a general tendency, grain size and porosity decrease as the niobium concentration increases. Important fiber texture appeared in all samples, with crystallite [001] direction parallel to sample symmetry axes. Texture becomes more intense as the Nb concentration increases. Studying the polarization and the piezoelectric constant d33, we observe a maximum of these properties for the intermediate value x = 0.8. |
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