DIELECTRIC-PROPERTIES OF BA1-XSRXTIO3 PREPARED BY SAG METHOD

Citation
L. Zhang et al., DIELECTRIC-PROPERTIES OF BA1-XSRXTIO3 PREPARED BY SAG METHOD, Ferroelectrics, 195(1-4), 1997, pp. 1-4
Citations number
12
Categorie Soggetti
Physics, Condensed Matter","Material Science
Journal title
ISSN journal
00150193
Volume
195
Issue
1-4
Year of publication
1997
Pages
1 - 4
Database
ISI
SICI code
0015-0193(1997)195:1-4<1:DOBPBS>2.0.ZU;2-N
Abstract
Ba1-xSrxTiO3(r=0, 0.3, 0.5 and 0.7) were synthesized by the SAG method . XRD revealed a cubic structure at room temperature. From the tempera ture dependence of the dielectric permittivity, the Curie temperature was measured. Although it decreases linearly with increasing x, it is obviously lower than that of the ceramics made by traditional method. The lowering of Curie temperature and disappearance of the trigonal-or thorhombic and orthorhombic-tetragonal phase transitions might be caus ed by the impurity Fe3+ and the excess of Ba at the grain surface.