Pyroelectric performance of [Bi0.48Na0.4032K0.0768]Sr0.04(Ti0.975Nb0.025)O3 ceramics
| Autor: | Vishvendra Pratap Singh, K. S. Srikanth, Rahul Vaish, Satyanarayan Patel |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Open-circuit voltage Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Pyroelectricity Temperature gradient Responsivity visual_art 0103 physical sciences visual_art.visual_art_medium Figure of merit Ceramic 0210 nano-technology Voltage |
| Zdroj: | Journal of the Australian Ceramic Society. 56:395-402 |
| ISSN: | 2510-1579 2510-1560 |
| Popis: | In the present work, the pyroelectric performance of [Bi0.48Na0.4032K0.0768]Sr0.04(Ti0.975Nb0.025)O3 (BNT-2.5Nb) ceramics is investigated. At room temperature, the value of pyroelectric coefficient found as 13.2 × 10−4 C/m2 K which is higher than many lead-free ferroelectric materials. Further, the pyroelectric figures of merit (FOMs) for detectivity (Fd), voltage responsivity (Fv), current responsivity (Fi), and energy harvesting (Fe*) are calculated. BNT-2.5Nb ceramics show pyroelectric open circuit voltage as 0.45 V when it was exposed to temporal temperature gradient. This work result indicates that the Nb-doping in Bi0.5Na0.5TiO3-based composition can be beneficial for lead-free pyroelectric device applications. |
| Databáze: | OpenAIRE |
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