Lead-free ternary perovskite compounds with large electromechanical strains
Lead-free compounds based on perovskite solid solutions in the ternary system (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3-Bi(X1/2Ti1/2)O3, where X Ni and Mg have been shown to exhibit large electromechanical strains. While the perovskite end members Bi(Mg1/2Ti1/2)O3and Bi(Ni1/2Ti1/2)O3display limited stability...
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| Main Authors: | , , , , , |
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| Format: | Journal |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80055020230&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50342 |
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| Institution: | Chiang Mai University |
| Summary: | Lead-free compounds based on perovskite solid solutions in the ternary system (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3-Bi(X1/2Ti1/2)O3, where X Ni and Mg have been shown to exhibit large electromechanical strains. While the perovskite end members Bi(Mg1/2Ti1/2)O3and Bi(Ni1/2Ti1/2)O3display limited stability in their pure state, both compounds were found to have solid solubilities of at least 50 mol. with (Bi1/2Na1/2)TiO3and (Bi1/2K1/2)TiO3. Most importantly, under relatively large applied fields, these materials exhibited large hysteretic electromechanical strains characterized by a parabolic shape. With effective piezoelectric coefficients (d33) greater than 500 pm/V, these systems have excellent potential as a Pb-free piezoelectric materials. © 2011 American Institute of Physics. |
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