Pyroelectric performance of [Bi 0.48 Na 0.4032 K 0.0768 ]Sr 0.04 (Ti 0.975 Nb 0.025 )O 3 ceramics
作者： K. S. Srikanth , V. P. Singh , Satyanarayan Patel , Rahul Vaish
DOI: 10.1007/S41779-019-00343-5
关键词:
摘要: In the present work, pyroelectric performance of [Bi0.48Na0.4032K0.0768]Sr0.04(Ti0.975Nb0.025)O3 (BNT-2.5Nb) ceramics is investigated. At room temperature, value coefficient found as 13.2 × 10−4 C/m2 K which higher than many lead-free ferroelectric materials. Further, figures merit (FOMs) for detectivity (Fd), voltage responsivity (Fv), current (Fi), and energy harvesting (Fe*) are calculated. BNT-2.5Nb show open circuit 0.45 V when it was exposed to temporal temperature gradient. This work result indicates that Nb-doping in Bi0.5Na0.5TiO3-based composition can be beneficial device applications.
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