Results 141 to 150 of about 612 (196)
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Organic Thin Films for Photonic Applications, 1993
Second-order nonlinear optical polymers must be poled in order to achieve the required non-centrosymmetry. Periodically poled materials are required for phase-matched operation of polarization converters1 and parametric devices2. For second-harmonic generation with modes of different order1, three-dimensionally (3-D) poled patterns are needed to ...
S. Bauer +4 more
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Second-order nonlinear optical polymers must be poled in order to achieve the required non-centrosymmetry. Periodically poled materials are required for phase-matched operation of polarization converters1 and parametric devices2. For second-harmonic generation with modes of different order1, three-dimensionally (3-D) poled patterns are needed to ...
S. Bauer +4 more
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Relationship between the pyroelectric coefficient and the lattice dynamics of the pyroelectrics
Solid State Communications, 1983Abstract The experimental results for a temperature dependence of the pyroelectric coefficient are represented for twenty different crystals in a wide temperature range. Current theories are used for an analytical fitting of this result. It is shown that in the ferroelectrics the pyroelectric coefficient γσ is defined mainly by optical phonon modes ...
N.D. Gavrilova +3 more
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Low Temperature Physics, 2017
The acoustoelectric transformation in single-crystal LiCoPO4 is studied. At temperatures corresponding to the paramagnetic phase, a piezoresponse to longitudinal elastic deformation parallel to the crystallographic a axis is observed. Arguments are introduced in support of identifying this compound as pyroelectric, as opposed to the generally accepted ...
M. P. Kolodyazhnaya +5 more
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The acoustoelectric transformation in single-crystal LiCoPO4 is studied. At temperatures corresponding to the paramagnetic phase, a piezoresponse to longitudinal elastic deformation parallel to the crystallographic a axis is observed. Arguments are introduced in support of identifying this compound as pyroelectric, as opposed to the generally accepted ...
M. P. Kolodyazhnaya +5 more
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2004
As the name implies, pyroelectricity is a first rank tensor property relating a change polarization P to a change in temperature δT. The defining relation can also be written in terms of the electric displacement D since no field is applied: . . . Pi = Di = piδT [C/m2]. . .
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As the name implies, pyroelectricity is a first rank tensor property relating a change polarization P to a change in temperature δT. The defining relation can also be written in terms of the electric displacement D since no field is applied: . . . Pi = Di = piδT [C/m2]. . .
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Physics of the Solid State, 2007
The influence of structural and electrical parameters of the pyroelectric phase on the pyroelectric properties of composites based on poly(vinylidene fluoride), vinylidene fluoride-tetrafluoroethylene copolymer (F-42), and pyroelectric ceramics of the lead zirconate titanate family with different structures is investigated.
M. K. Kerimov +4 more
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The influence of structural and electrical parameters of the pyroelectric phase on the pyroelectric properties of composites based on poly(vinylidene fluoride), vinylidene fluoride-tetrafluoroethylene copolymer (F-42), and pyroelectric ceramics of the lead zirconate titanate family with different structures is investigated.
M. K. Kerimov +4 more
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On the Quantum Theory of Pyroelectricity
Reviews of Modern Physics, 1945Not ...
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Pyroelectricity in Polytrifluoroethylene
Japanese Journal of Applied Physics, 1983Pyroelectricity has been observed in polytrifluoroethylene, which was strongly enhanced in the sample subjected to rapid quenching from the melt. The pyroelectric coefficient showed anomalous behavior of changing signs twice over the temperature range of 100 to 330 K.
Yoshio Oka, Naokazu Koizumi
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4.2.3 Pyroelectric coefficients of ferroelectric pyroelectrics
2005A. S. Bhalla, S. T. Liu
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