Microstructure and electrical properties of (1-x)Bi<inf>0.5</inf>(Na<inf>0.80</inf>K<inf>0.20</inf>)<inf>0.</inf>5TiO<inf>3</inf>-xLiNbO<inf>3</inf>lead-free piezoelectric ceramics
© 2015 IEEE. Lead-free piezoelectric ceramics with the formula of (1-x)Bi 0.5 (Na 0.80 K 0.20 ) 0.5 TiO 3 -xLiNbO 3 or (1-x)BNKT-xLN system, when x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06 mol fraction, were fabricated by a conventional mixed oxide method and sintered at the temperature of 1100°C...
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| Main Authors: | , , , |
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| Format: | Conference Proceeding |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84947996571&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/44697 |
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| Institution: | Chiang Mai University |
| Summary: | © 2015 IEEE. Lead-free piezoelectric ceramics with the formula of (1-x)Bi 0.5 (Na 0.80 K 0.20 ) 0.5 TiO 3 -xLiNbO 3 or (1-x)BNKT-xLN system, when x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06 mol fraction, were fabricated by a conventional mixed oxide method and sintered at the temperature of 1100°C for 2 h. All ceramics were focused in terms of phase, microstructure, dielectric, ferroelectric and piezoelectric properties. All samples have the density ranging of 5.50 - 5.66 g/cm 3 . X-ray diffraction pattern exhibited a single perovskite structure without any secondary phases. Scanning electron micrographs indicated a cubic-like grain shape occurred for all compositions with average grain size of 1.11 - 1.09 μm. The addition of LN also improved dielectric properties of BNKT ceramic. The maximum dielectric constant measured at room temperature was 1830 for BNKT-0.03LN sample. |
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