کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5463657 | 1517199 | 2017 | 4 صفحه PDF | دانلود رایگان |
- Sr and Nb co-doped Pb(Zr,Ti)O3 ferroelectric ceramics were synthesized by a solid-state reaction method.
- Rare phenomenon of coexistence of negative and positive electrocaloric effect was found in Sr and Nb co-doped Pb(Zr,Ti)O3 ferroelectric ceramics.
- High electrocaloric coefficient of â0.25 K mm kVâ1 and 0.43 K mm kVâ1 were obtained.
- Reason for the coexistence of negative and positive electrocaloric effect was discussed.
The electrocaloric effect has been investigated in Sr and Nb co-doped Pb(Zr,Ti)O3 (PSNZT) ceramics synthesized by conventional solid state reaction. The coexistence of negative and positive electrocaloric effect was revealed in PSNZT ceramics. The electrocaloric response values of â0.38 K at 80 °C and 0.65 K at 180 °C were observed under an electric field of 1.5 kV/mm. The corresponding electrocaloric coefficient values were calculated to be â0.25 K mm kVâ1 and 0.43 K mm kVâ1 respectively. The mechanism of the coexistence of negative and positive electrocaloric effect was discussed.
Journal: Materials Letters - Volume 189, 15 February 2017, Pages 303-306