Artikel: Dielectric properties of B2O3 doped Sm(Co1/2Ti1/2)O3 ceramics at microwave frequency
Journal of materials science. 2007 Apr., v. 42, no. 7
2007
Abstract: The microwave dielectric properties and the microstructures of Sm(Co1/2Ti1/2)O3 ceramics with B2O3 additions (0.25 and 0.5 wt%) prepared by conventional solid-state route have been investigated. The prepared Sm(Co1/2Ti1/2)O3 exhibited a mixture of Co and ...
| Abstract | The microwave dielectric properties and the microstructures of Sm(Co1/2Ti1/2)O3 ceramics with B2O3 additions (0.25 and 0.5 wt%) prepared by conventional solid-state route have been investigated. The prepared Sm(Co1/2Ti1/2)O3 exhibited a mixture of Co and Ti showing 1:1 order in the B-site. Doping with B2O3 (up to 0.5 wt%) can effectively promote the densification of Sm(Co1/2Ti1/2)O3 ceramics with low sintering temperature. It is found that Sm(Co1/2Ti1/2)O3 ceramics can be sintered at 1,260 °C due to the grain boundary phase effect of B2O3 addition. At 1,290 °C, Sm(Co1/2Ti1/2)O3 ceramics with 0.5 wt% B2O3 addition possess a dielectric constant (ε r) of 27.7, a Q × f value of 33,600 (at 9 GHz) and a temperature coefficient of resonant frequency (τf) of −11.4 ppm/ °C. The B2O3-doped Sm(Co1/2Ti1/2)O3 ceramics can find applications in microwave devices requiring low sintering temperature. |
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| Schlagwörter | ceramics ; cobalt ; dielectric properties ; microstructure ; temperature |
| Sprache | Englisch |
| Erscheinungsverlauf | 2007-04 |
| Umfang | p. 2393-2398. |
| Erscheinungsort | Kluwer Academic Publishers-Plenum Publishers |
| Dokumenttyp | Artikel |
| ZDB-ID | 2015305-3 |
| ISSN | 1573-4803 ; 0022-2461 |
| ISSN (online) | 1573-4803 |
| ISSN | 0022-2461 |
| DOI | 10.1007/s10853-006-1270-6 |
| Datenquelle | NAL Katalog (AGRICOLA) |
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