Phase diagram and piezoelectric response of (Ba1-xCax)(Zr0.1Ti0.9)O3 solid solution
| Autor: | Fu, Desheng, Kamai, Yuto, Sakamoto, Naonori, Wakiya, Naoki, Suzuki, Hisao, Itoh, Mitsuru |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | J. Phys.: Condens. Matter 25 425901 (2013) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0953-8984/25/42/425901 |
| Popis: | We report the phase diagram of (Ba1-xCax)(Zr0.1Ti0.9)O3 solid solution. It is found that substitution of smaller Ca ions for Ba ions can slightly increase the cubic-tetragonal(T) para-ferroelectric phase transition temperature and strongly decrease the T-orthorhombic (O) and O-rhombohedral (R) transition. This unique ferroelectric phase evolution is attributed to Ca off-centering effects. More importantly, lowering of the T-O or O-R phase transitions allows us to prepare the piezoelectric ceramics with a strain response as high as S/E~800 pm/V (E=10 kV/cm) over a wide range of compositions with x~0.1 - 0. 18 at room temperature, which may be interesting for piezoelectric applications. Comment: 11 pages, 4 figures. J. Phys.: Conden. Matter., 2013 |
| Databáze: | arXiv |
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