Enhanced piezoelectric properties in (Ba 1-x Ca x )(Ti 0.90 Sn 0.10 )O 3 -0.08Dy 2 O 3 lead-free ceramics
| Autor: | Xu-guang Jia, Zhi-hui Chen, Tian-xiang Zhao, Jian-ning Ding, Jianhua Qiu, Ming-gang Ma, Ke-qian Zhu, Li Zhiwei |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Phase transition Materials science Mechanical Engineering Analytical chemistry Sintering 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Piezoelectricity Ion Tetragonal crystal system Mechanics of Materials visual_art Phase (matter) 0103 physical sciences visual_art.visual_art_medium General Materials Science Ceramic 0210 nano-technology |
| Zdroj: | Materials Research Bulletin. 105:330-333 |
| ISSN: | 0025-5408 |
| Popis: | (Ba1-xCax)(Ti0.90Sn0.10)O3-0.08Dy2O3 ceramics (BCTSD-x, x = 0.02–0.10) were fabricated by conventional solid state sintering method. The effect of Ca2+ ions addition on the phase structure, microstructure, and electric properties of ceramics were studied. X-ray diffraction analysis reveals the replacement of Ba2+ ions in the perovskite structure by Ca2+ ions. Rhombohedral phase and tetragonal phase coexist in the composition with x = 0.06–0.10. Both d33 and Kp of the ceramics increase with increasing Ca concentration, and attain maximum values of 675 pC/N and 55.0%, respectively, for x = 0.06. All the ceramics present typical diffuse phase transition behavior, and the feature is not sensitive to the amount of Ca2+ ions. |
| Databáze: | OpenAIRE |
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