Dielectric properties of sol-gel derived lead magnesium niobate ceramics
- 1 June 1990
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics Letters Section
- Vol. 11 (6) , 137-144
- https://doi.org/10.1080/07315179008200828
Abstract
Lead magnesium niobate (PMN) was prepared by a sol-gel technique. The gel calcined at 850°C for 2hr resulted in > 98% of perovskite phase. About 98% of the theoretical density was achieved for pellets sintered at 1200°C for 4hr. The room temperature dielectric constant of the pellets sintered at 1250°C for 4hr showed a maximum value of 11686 at 1 KHz. The dielectric constant increased with increasing grain size of the samples sintered at various temperatures.Keywords
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