Electrical Properties of Bismuth Titanate Based Ceramics with Secondary Phases

Clicks: 343
ID: 116405
1970
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Abstract
Bi4Ti3O12 (BIT) based ceramics were prepared by hydroxide coprecipitation method and subsequent treatment at 650∘C for 1 h. Calcined BIT was doped with different amounts of WO3 by surface doping using W(C2H5O)6. The amount of dopant modified the sintering behaviour of BIT-based ceramics through a liquid-phase assisted sintering mechanism in the case of low dopant concentration and Zenner effect when high concentration of dopant was used. Consequently, the microstructure and the electrical properties were strongly dependent on the dopant concentration. Doped BIT-based ceramics showed a microstructure composed of very small platelet-like grains and the electrical conductivity was markedly decreased. The high electrical resistivity makes possible the polarization of doped ceramics and relatively good piezoelectric parameters were measured.
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Authors M. Villegas;T. Jardiel;A. C. Caballero;J. F. Fernández;M. Villegas;T. Jardiel;A. C. Caballero;J. F. Fernández;
Journal journal of electroceramics
Year 1970
DOI
doi:10.1007/s10832-004-5155-2
URL
https://dx.doi.org/10.1007/s10832-004-5155-2
Keywords
electrochemistry ceramics glass composites natural materials characterization and evaluation of materials crystallography and scattering methods optical and electronic materials

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