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Piezoelectric and pyroelectric coefficients for ferroelectric crystals with polarizable moleculesExpressions for piezoelectric and pyroelectric coefficients for a crystal of polarizable point dipoles are derived. The effect of crystal structure on the local electric field acting to polarize the molecules is included via the Lorentz-factor formalism. The derived expressions for the piezo- and pyroelectric coefficients are found to contain terms dependent on derivatives of the Lorentz factors. These terms reflect the changing of molecular dipole moments in response to the changing local electric field in the strained crystal. Inclusion of this effect results in predictions of coefficients substantially different from those obtained using the Lorentz field approximation.
Document ID
19830036009
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Purvis, C. K.
(NASA Lewis Research Center Cleveland, OH, United States)
Taylor, P. L.
(Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 11, 2013
Publication Date
October 15, 1982
Publication Information
Publication: Physical Review B - Solid State
Subject Category
Solid-State Physics
Accession Number
83A17227
Funding Number(s)
CONTRACT_GRANT: DAAG29-78-G-0064
Distribution Limits
Public
Copyright
Other

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