| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1463670 | Ceramics International | 2009 | 6 Pages |
Abstract
A high density single-phase lead magnesium niobate ceramic with the highest peak dielectric constant reported so far, has been synthesized and sintered simultaneously via a modified mixed oxide route, using mixed oxide nanopowder and single-step sintering. The mixed nanopowder was sintered at 1200 °C in air and PbO atmospheres. By comparison, samples sintered in air, gained pyrochlore structure, while those samples sintered in PbO atmosphere had pure perovskite structure. Pellets sintered for 2.5 h exhibited best dielectric properties with peak dielectric constant of 18,672 at the frequency of 1 kHz at −13 °C. The dielectric properties, compressibility, phase formation, densification, and microstructure of the samples were investigated.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
A.M. Bazargan, M. Naghavi, Mehdi Mazaheri, S.K. Sadrnezhaad,