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- W4295015087 abstract "Achieving both the large transduction coefficient (the product of piezoelectric charge d33 and voltage coefficients g33) and high Curie temperature is very important to improve the power generation performance and their thermal stability of piezoelectric energy harvesters. It is difficult to improve the transduction coefficient of the commercial PZT based piezoelectric ceramics due to the same variation trend of piezoelectric charge coefficient and dielectric constant with chemical modifications. In this work, Bi2O3 and Fe2O3 co-modified ((Pb1-xBix)((Zr0.53Ti0.47)1-xFex)O3) ceramics were prepared by conventional solid state reaction method, and their dielectric and piezoelectric properties were studied. The piezoelectric charge coefficient d33 increases by Bi and Fe co-modifications due to the enlarged grain size and reduced lattice distortion, while the dielectric constant ε33 deceases mainly owing to the increased micro-pores in grains, leading to the enhancement transduction coefficient d33×g33. The Curie temperature Tc and maximum transduction coefficient d33×g33 are 346 °C and 17169 × 10−15 m2/N, respectively, which are both higher than those of commercial PZT and PZN-PZT based piezoelectric ceramics. This work provides a new way to enhance the transduction coefficient of PZT based ceramics for piezoelectric energy harvesters used in wide temperature range." @default.
- W4295015087 created "2022-09-09" @default.
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- W4295015087 date "2023-01-01" @default.
- W4295015087 modified "2023-10-14" @default.
- W4295015087 title "Achieving both large transduction coefficient and high Curie temperature of Bi and Fe co-doped PZT piezoelectric ceramics" @default.
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- W4295015087 doi "https://doi.org/10.1016/j.ceramint.2022.09.014" @default.
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