Effect of sintering atmosphere on densification and dielectric characteristics in Sr0. 5Ba0. 5Nb2O6 ceramics
Ferroelectric Sr0. 5Ba0. 5Nb2O6 ceramics with a tetragonal tungsten bronze structure were
sintered in an atmosphere with a different oxygen partial pressure (Po2). The densification
and diffuse phase transition (DPT) behaviors of the ceramics were examined. The density of
the sintered body increased as the Po2 of the sintering atmosphere increased, and the
optical transmittance and the dielectric constant increased accordingly. However, the Curie
temperature decreased. It is explained from a viewpoint of the internal stress on the sample …
sintered in an atmosphere with a different oxygen partial pressure (Po2). The densification
and diffuse phase transition (DPT) behaviors of the ceramics were examined. The density of
the sintered body increased as the Po2 of the sintering atmosphere increased, and the
optical transmittance and the dielectric constant increased accordingly. However, the Curie
temperature decreased. It is explained from a viewpoint of the internal stress on the sample …
Ferroelectric Sr0.5Ba0.5Nb2O6 ceramics with a tetragonal tungsten bronze structure were sintered in an atmosphere with a different oxygen partial pressure (Po2). The densification and diffuse phase transition (DPT) behaviors of the ceramics were examined. The density of the sintered body increased as the Po2 of the sintering atmosphere increased, and the optical transmittance and the dielectric constant increased accordingly. However, the Curie temperature decreased. It is explained from a viewpoint of the internal stress on the sample, which is dependent on the porosity.
Elsevier
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