| Autor: |
Huang, Xian Li, Wang, Fu Ping, Song, Ying |
| Zdroj: |
Advanced Materials Research; September 2011, Vol. 326 Issue: 1 p127-130, 4p |
| Abstrakt: |
In the present work, the microstructure and microwave dielectric properties of BaTi4O9 ceramics derived from a sol-gel precursor were presented. Density measuring results demonstrated that the largest densities of ceramic sample about 96.7% could be reached by virtue of a cool iso-static press and a sintering process at at 1300 °C for 6 hours. The dielectric constant (εr), quality factor (Q×f) and the temperature coefficients (τf) of the BaTi4O9 ceramic samples were 36.65, 28000 GHz, +20.2 ppm/°C, respectively. XRD, SEM and XPS were used to characterize the microstructure of the ceramics samples. Substantial Ti3+ was proposed to be the cause of dielectric loss. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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