Direct-current field dependence of dielectric properties in alumina-doped barium strontium titanate

Authors
Wu, L Chen, YC Huang, CL Chou, YP Tsai, YT
Citation
L. Wu et al., Direct-current field dependence of dielectric properties in alumina-doped barium strontium titanate, J AM CERAM, 83(7), 2000, pp. 1713-1719
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN journal
00027820 → ACNP
Volume
83
Issue
7
Year of publication
2000
Pages
1713 - 1719
Database
ISI
SICI code
0002-7820(200007)83:7<1713:DFDODP>2.0.ZU;2-Q
Abstract
The dielectric properties of (Ba0.6Sr0.4)TiO3 and Al2O3-doped (Ba0.6Sr0.4)T iO3 have been characterized. The grain size of the specimen is maximum for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% Al2O3. The density and the real part of the relative dielectric constant each decrease as the Al2O3 co ntent increases. The loss factor is minimum for (Ba0.6Sr0.4)TiO3 that has b een doped with 2 wt% Al2O3. The dielectric constant of the specimens decrea ses as the applied de field increases. The influence of the de field on the loss factor is much less than that on the dielectric constant. The tunabil ity is similar to 24% for (Ba0.6Sr0.4)TiO3 that has been doped with 1 wt% A l2O3.