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ENHANCED TUNABILITY AND RELAXOR CHARACTERISTICS IN CALCIUM SUBSTITUTED BARIUM ZIRCONIUM TITANATE THIN FILMS.
- Source :
-
Integrated Ferroelectrics . 2007, Vol. 91 Issue 1, p48-61. 14p. 4 Charts, 4 Graphs. - Publication Year :
- 2007
-
Abstract
- Thin films of BaZr0.25Ti0.75O3 in which Ba2 + is partially substituted by Ca2 + are prepared by a sol-gel method. Phases and dielectric properties of the films are studied.The crystal structure of BaZr0.25Ti0.75O3 is cubic and does not change with Ca substitution upto x = 0.25 in Ba1-xCaxZr0.25Ti0.75O3. A change from a normal to relaxor behavior is observed for x = 0.20 as indicated by a change in the frequency of dielectric maxima with temperature and other parameters.The dielectric constant and transition temperatures are found to increase with increasing Ca substitution. A tunabilty of 71%, much higher than reported in literature for this material, is observed for x = 0.1 i.e for Ba0.9Ca0.1Zr0.25Ti0.75O3. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10584587
- Volume :
- 91
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Integrated Ferroelectrics
- Publication Type :
- Academic Journal
- Accession number :
- 25084949
- Full Text :
- https://doi.org/10.1080/10584580701315156