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The effects of post-sintering re-oxidation treatment on dielectric relaxation, conductive and non-linear properties of dense Ba0.70Sr0.30TiO3 ceramics and its porous homologs were discussed. The ceramics were prepared by solid state reaction and sintered at 1450°C/2h. The porosity degree was induced by adding 35vol% graphite as sacrificial pore forming agent into Ba0.70Sr0.30TiO3 powder. A comparative...
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