Doping Effects of SiO2 on the Dielectric and Piezoelectric Properties of PbTiO3-Based Ceramics and Its SAW Applications
| Autor: | Sheng-Yuan Chu, Chih-Kao Cheng |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Electromechanical coupling coefficient
Materials science Surface acoustic wave Sintering Dielectric Condensed Matter Physics Piezoelectricity Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Control and Systems Engineering visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Lead titanate Ceramic Electrical and Electronic Engineering Composite material Temperature coefficient |
| Zdroj: | Integrated Ferroelectrics. 69:65-72 |
| ISSN: | 1607-8489 1058-4587 |
| DOI: | 10.1080/10584580590897281 |
| Popis: | The Sm-modified lead titanate ceramics with a composition of (Pb0.85Sm0.1)- (Ti0.98Mn0.02)O3 piezoceramics doped with SiO2 were prepared by conventional mixed-oxide method using sintering temperature at 1100°C. Microstructural and compositional analyses of the PbTiO3-based ceramics have been carried out using XRD and SEM. The effects of dopants on the sintering temperature and piezoelectric properties of the ceramics have been investigated. We successfully showed that these additives were helpful in lowering of the sintering temperature and still keep high thickness electromechanical coupling coefficient, kt, and small planar electromechanical coupling coefficient, kp. Surface acoustic wave (SAW) devices were fabricated and the properties, including phase velocity and temperature coefficient of frequency (TCF), were measured. |
| Databáze: | OpenAIRE |
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