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Poling tuning: A plausible solution for minimizing microphony and secondary pyroelectric coefficient in ferroelectrics
Author(s) -
Kiran Raj,
Kumar Anuruddh,
Kumar Rajeev,
Vaish Rahul
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13370
Subject(s) - poling , pyroelectricity , materials science , piezoelectricity , piezoelectric coefficient , detector , orientation (vector space) , composite material , optoelectronics , optics , physics , ferroelectricity , geometry , mathematics , dielectric
This study proposes the idea of reducing the microphony effect and secondary pyroelectric coefficient in pyroelectric detectors by tuning the poling orientation. Mathematically, it has been shown that piezoelectric strain coefficients get altered by changing the poling direction. Eventually, for a couple of materials it has been demonstrated that microphony and secondary pyroelectric coefficient can be diminished by poling them at a given orientation. The poling angle nullifying secondary pyroelectric coefficient was found to be 58.2°, 47.1°, and 78.9° for PbZn 1 / 3Nb 2 / 3O 3 - 0.08 PbTiO 3(PZN‐0.08PT), PbMn 1 / 3Nb 2 / 3O 3 - 0.33 PbTiO 3(PMN‐PT), andBa 0.7 Ca 0.3TiO 3 - 0.48 BaZr 0.2 Ti 0.8O 3(BCT‐0.48BZT) respectively while no such value existed for PbZr x Ti 1 - xO 3(PZT‐5A).