Microstructure effects on BaTiO3/BaTi0.8Zr0.2O3 composites properties

The dielectric, pyroelectric and ferroelectric properties of bilayered BaTiO3/BaTi0.8Zr0.2O3 ceramics are described and correlated with their microstructure. Different sintering times are employed to change the microstructure and promote interdiffusion between the layers. The effects of constrained...

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Bibliographic Details
Published in:Ceramics international 2016-05, Vol.42 (7), p.8488-8494
Main Authors: Amaral, Thiago Martins, Antonelli, Eduardo, Ochoa, Diego Alejandro, García, José Eduardo, Hernandes, Antonio Carlos
Format: Article
Language:English
Subjects:
A. Sintering
Barium titanate
Dielectric
Dielectrics
Dielèctrics
Ferroelectric and piezoelectric properties
Física
Layered ceramics
Sintering
Sinterització
Àrees temàtiques de la UPC
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Summary:The dielectric, pyroelectric and ferroelectric properties of bilayered BaTiO3/BaTi0.8Zr0.2O3 ceramics are described and correlated with their microstructure. Different sintering times are employed to change the microstructure and promote interdiffusion between the layers. The effects of constrained sintering on both compositions are analyzed and their properties are compared to that of single phase BaTiO3 and BaTi0.8Zr0.2O3 ceramics. The results show that, at sintering times until 2h, the bilayer properties are predominantly affected by the presence of residual stresses. Only after 4h sintering, the properties are predominantly affected by interdiffusion between the layers.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2016.02.071