| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1491643 | Materials Research Bulletin | 2009 | 5 Pages |
Abstract
Dense BiFeO3 ceramics were prepared by a novel spark plasma sintering (SPS) technique. The sintering was conducted at temperatures ranging from 675 to 750 °C under 70 MPa pressure. A bulk density value up to 96% of theoretical density was achieved in the process. This contrast to around 90% of the theoretical density achieved by conventional sintering at around 830 °C. It was found that the tendency to form unwanted Bi2Fe4O9 phase is higher at a high sintering temperature for SPS. The dielectric and ferroelectric properties also improved (with respect to conventionally sintered sample) for spark plasma-sintered samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
R. Mazumder, D. Chakravarty, Dipten Bhattacharya, A. Sen,