Results 181 to 190 of about 22,359 (230)

Transparent Ferroelectric Glass-Ceramics

Ferroelectrics, 2004
In recent years, there has been a resurgence of interest in transparent ferroelectric glass-ceramics (TFGCs), which are a special class of glass-ceramic composites that combine the low cost of fabrication and forming of transparent glass with the superior nonlinear optical and electro-optical properties of ferroelectric crystals.
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Viscoplastic models for ferroelectric ceramics

Journal of the European Ceramic Society, 2005
Nonlinear hysteretic phenomena in polycrystalline ferroelectric ceramics are simulated using viscoplastic (rate-dependent) models without a switching condition. Viscoplastic models describe the domain structure evolution effectively: in terms of rate equations for the volume fractions of orientation variants.
A.Yu. Belov, W.S. Kreher
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Printing with ferroelectric ceramics

Ferroelectrics, 1997
Abstract For printing applications, ferroelectric (FE) material can be poled without electrodes by charging the surface at the image areas in one polarity and the background to the opposite polarity. On the surface of FE-ceramics, high electric fields are produced which are able to attract or repel charged toner particles. This property can be used for
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Fracture features of ferroelectric ceramics

Ferroelectrics, 1998
Abstract Some mechanisms of the strength and fracture toughness alteration for the ferroelectric ceramics (FC) using the early computer simulations are considered. The microcracking processes and effects of the crack bridging are studied. Finally, the growth features of the steady-state crack into ferroelectrics domain structure are investigated.
Ivan Parinov, Lyubov Parinova
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Fracture behavior of ferroelectric ceramics

SPIE Proceedings, 1999
Piezoelectric actuators are key components in many smart structures applications. Long term reliability of these actuators becomes increasingly important as research makes the transition to commercial applications. Fracture toughness is a material parameter that measures a material's resistance to crack propagation.
Chen, Wei, Lupascu, Doru C., Lynch, Christopher S.   +2 more
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Nonlinear Deformation of Ferroelectric Ceramics

Journal of the American Ceramic Society, 1993
Ferroelectric ceramics used in advanced actuator systems may be subject to high stresses and large deformations that may lead to nonlinearity and performance degradation. A preliminary experimental investigation has been undertaken to study the relevant mechanical responses.
Hengchu Cao, Anthony G. Evans
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Strong ultrasonic microwaves in ferroelectric ceramics

1996 IEEE Ultrasonics Symposium. Proceedings, 1998
It is well known that ferroelectric materials have piezoelectric properties which allow the transformation of electrical signals into mechanical signals and vice versa. The transducer action normally is restricted to frequencies up to the mechanical resonance frequency of the sample.
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Elastocaloric effect in ferroelectric ceramics

Applied Physics Letters, 2015
Elastocaloric effect has been experimentally demonstrated in bulk (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 polycrystalline ferroelectric material. Predictions were made using Maxwell's relationship for elastocaloric effect. A maximum elastocaloric effect of 1.55 K was observed for an initial material temperature of 340 K and applied compressive stress of 0–250 MPa
Aditya Chauhan, Satyanarayan Patel, Rahul Vaish   +2 more
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Ferroelectric ceramics research in china

Ferroelectrics, 1981
Abstract The activities of ferroelectric ceramics research in China are introduced. Besides the conventional barium titanate and lead zirconate titanate ceramics, the induced phase transition in PZT, the (Ba1-XSrx)2NaNb5O15,(Na1-XLiX)NbO3 system, the hot forging of Bi4(PbXSr1-X)Ti4O15, the mixed oxide system of the low sintering temperature are ...
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Ferroelectric Fatigue of KNN Ceramics

Ferroelectrics, 2015
Phase-pure KNN (K0.5Na0.5NbO3) was synthesized from Rochelle salt and niobium pentoxide through solid-state route and the synthesized powder was sintered at 1130°C to get dense KNN ceramics. After polarization fatigue test, it was found that the d33, kP and remanent polarization (Prem) of KNN decreased substantially.
B. Tah, S. Goswami, T. Dasgupta, J. Bera, P. Sinha, D. Kundu, S. Sen, A. Sen   +7 more
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