Lehman, J.
and Pannell, C.
(2003),
Position and Temperature Dependence of Pyroelectricity in Domain-Engineered Stoichiometric and Congruent LiTaO<sub>3</sub>, Ferroelectrics
(Accessed October 14, 2024)
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Position and Temperature Dependence of Pyroelectricity in Domain-Engineered Stoichiometric and Congruent LiTaO3
Published
Author(s)
, Chris Pannell
Abstract
Domain-engineered bicell (parallel compensated) pyroelectric detectors were constructed from stoichiometric and congruent lithium tantalate. The variation of the pyroelectric current response of these detectors was investigated as a function of temperature and position. We define a pyroelectric response gradient Π, which, near boundary of antiparallel domains, is asymmetric and increases to 4 % K-1 in the poled half of the congruent LiTaO3 bicell. The Π variation in the stoichiometric LiTaO3 bicell was also asymmetric and varied only 1 % K-1. The contribution of the primary, secondary, and tertiary pyroelectric effects are discussed along with a summary of the stress and strain in the heated detector disk.Citation
Ferroelectrics
Pub Type
Journals
Keywords
Congruent, Lithium Niobate, Lithium Tantalate, Pyroelectricity, Stoichiometric, Strain, Temperature, Tertiary Pyroelectricity
Citation
Issues
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Created March 14, 2003, Updated October 12, 2021