| Autor: |
E. K. Akdogan, Ahmad Safari, J. A. Bellotti |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on Applications of Ferroelectrics (IEEE Cat. No.00CH37076). |
| DOI: |
10.1109/isaf.2000.941539 |
| Popis: |
Dielectric properties of (Ba/sub 1-x/Sr/sub x/)TiO/sub 3/ of x=0.35-0.55 were studied in the frequency range 1-3 GHz. Samples sintered at 1350/spl deg/C for 3 hours in oxygen exhibited permittivity values > 400 along with /spl sim/3% loss at >1GHz. Air sintered samples had higher loss (/spl sim/5%) and lower permittivity. This peculiar behavior of paraelectric BST is discussed within the framework of the model proposed by Vendik et al.[1969]. Extended sintering times (/spl sim/6 hours) were found to promote lower losses (/spl sim/0.4%) and it can be attributed to higher chemical homogeneity and larger grain size. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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