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Author: search.filters.author.Sittiketkorn, PanaddaSubject: search.filters.subject.electrical properties

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    Item type:Publication,
    The effect of firing temperatures on (Pb0.75Ba 0.25)(Zr0.70Ti0.30)O3 ceramics prepared via the combustion technique
    (2013-12-01)
    Sittiketkorn, Panadda
    ;
    Wongtey, Pongkiti
    ;
    Vittayakorn, Naratip
    ;
    Bongkarn, Theerachai
    The (Pb0.7<inf>5</inf>Ba0.2<inf>5</inf>)(Zr<inf>0.70</inf>Ti <inf>0.30</inf>)O<inf>3</inf> (PBZT) ceramics were prepared via the combustion technique. (CO(NH<inf>2</inf>)<inf>2</inf>) was used as a fuel. The effect of firing temperature on PBZT's phase formation, microstructure and electrical properties were investigated. The calcination and sintering temperatures were 600°C-1000°C and 1100°C-1300°C. The pure rhombohedral perovskite was obtained from the powders calcined at 850°C. The average particle size tended to increase with increased calcination temperatures. A pure rhombohedral perovskite phase was found in all pellet samples. The average grain size and linear shrinkage tended to increase from 0.57 to 2.15 μm and from 6.8 to 15.8% with increased sintering temperatures. The dielectric results indicated the relaxer behavior of PBZT ceramics. The Curie temperature tended to decrease with increasing sintering temperatures. The highest density (∼7.39 g/cm <sup>3</sup>) and highest dielectric constant (∼8620) were obtained by using the combustion technique which was higher than the conventional mixed oxide method. © 2013 Copyright Taylor and Francis Group, LLC.
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