High pyroelectricity in lead-free 0.5Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>–0.5(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> ceramics
書誌事項
- 公開日
- 2012-04-25
- 権利情報
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- https://iopscience.iop.org/page/copyright
- https://iopscience.iop.org/info/page/text-and-data-mining
- DOI
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- 10.1088/0022-3727/45/19/195301
- 公開者
- IOP Publishing
この論文をさがす
説明
<jats:title>Abstract</jats:title> <jats:p>We report high pyroelectricity in lead-free 0.5Ba(Zr<jats:sub>0.2</jats:sub>Ti<jats:sub>0.8</jats:sub>)O<jats:sub>3</jats:sub>–0.5(Ba<jats:sub>0.7</jats:sub>Ca<jats:sub>0.3</jats:sub>)TiO<jats:sub>3</jats:sub> (BZT–50BCT) ceramics which were previously reported to exhibit high piezoelectricity. The pyroelectric coefficient measured by the Byer–Roundy method upon heating for dc-poled samples shows a high value of 5.84 × 10<jats:sup>−4</jats:sup> C m<jats:sup>−2</jats:sup> K<jats:sup>−1</jats:sup> at 300 K, comparable to those of PZT-based ceramics and significantly higher than many other lead-free pyroelectric materials. The pyroelectric coefficient calculated from the remanent polarization versus temperature relationship obtained during a cooling process is 17.17 × 10<jats:sup>−4</jats:sup> C m<jats:sup>−2</jats:sup> K<jats:sup>−1</jats:sup> at 300 K, which is considerably larger than the value obtained by the Byer–Roundy method. This difference is attributed to the thermal hysteresis of the rhombohedral–tetragonal phase transition between the heating and cooling processes.</jats:p>
収録刊行物
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- Journal of Physics D: Applied Physics
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Journal of Physics D: Applied Physics 45 (19), 195301-, 2012-04-25
IOP Publishing