Results 231 to 240 of about 5,651 (284)

Lead‐Free Relaxor Ferroelectrics

Journal of the American Ceramic Society, 2011
Feature size is a natural determinant of material properties. Its design offers the technological perspectives for material improvement. Grain size, crystallite size, domain width, and structural defects of different nature constitute the classical design elements.
Shvartsman, Vladimir, Lupascu, Doru C.
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Relaxor ferroelectric transducers

IEEE Symposium on Ultrasonics, 2002
Novel ultrasonic transducers whose sensitivity can be controlled with a DC bias field have been developed by utilizing relaxor ferroelectrics as a transducer material in place of conventional piezoelectrics. Relaxor ferroelectrics have a large bias-field-induced piezoelectricity as well as a giant electrostrictive effect due to their extremely large ...
H. Takeuchi, H. Masuzawa, C. Nakaya, Y. Ito   +3 more
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Relaxor ferroelectric materials

IEEE Symposium on Ultrasonics, 2002
The authors review relaxor ferroelectrics and associated phenomena. It is noted that the anomalously large dielectric constants (K) of relaxor ferroelectrics make them ideal for multilayer capacitors, electrostrictive actuators, and E-field-induced piezoelectrics for low-frequency sonar and high-frequency biomedical transducers.
T.R. Shrout, J. Fielding
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Relaxor Ferroelectric Polymers

Ferroelectrics, 2006
The relaxor ferroelectric polymers, i.e., the poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] based terpolymers and high energy electron irradiated copolymers, provide unique opportunity to investigate the ferroelectric relaxor behavior in polymeric materials.
Shihai Zhang, Cheng Huang, Z. -Y. Cheng, F. Xia, R. Klein, Q. M. Zhang, V. Bobnar, A. Levstik, F. Bauer   +8 more
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Relaxor ferroelectric polymers

ISAF 1998. Proceedings of the Eleventh IEEE International Symposium on Applications of Ferroelectrics (Cat. No.98CH36245), 2002
An exceptionally high electrostrictive response was observed in electron irradiated polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) copolymer. Moreover, the transverse strain of the material can be tuned over a large range by different sample treatment conditions.
Q.M. Zhang, V. Bharti, Z.-Y. Cheng, null Xing-Zhong Zhao   +3 more
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Optical Properties of Relaxor Ferroelectrics

Ferroelectrics, 2004
The optical absorption spectrum, luminescent emission and photoconductivity were investigated in single crystal PbMg1/3Nb2/3O3 and in the Pb0.91La0.09(Zr0.65Ti0.35)O3 ceramics in the wide temperature region. The spectrum of the luminescence correlates with spectrum of photoconductivity emission.
Zverev D., Migachev S., Mamin R., Nikitin S., Sadykov M.   +4 more
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Nanocrystalline Ferroelectric/Relaxor Multilayers

Ferroelectrics, 2002
After investigations on sputtered nanocrystalline ferroelectric Pb 0.76 Ca 0.24 TiO 3 (PTC) films and nanocrystalline relaxor films, namely Pb(Sc 0.5 Ta 0.5 )O 3 (PST), Pb(Sc 0.5 Nb 0.5 )O 3 (PSN) and Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) we started to investigate effects in multilayers of nanocrystalline ferroelectric and relaxor films.
Heinz Schmitt, Carlos Ziebert, Andris Sternberg, Vismants Zauls, Maris Kundzins, Karlis Kundzins, Ilze Aulika, Karl-Heinz Ehses, Jan K. Krüger   +8 more
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Phenomenological theory of uniaxial relaxor ferroelectrics

Journal of Physics: Condensed Matter, 2016
A phenomenological thermodynamic theory of uniaxial relaxor strontium barium niobate [Formula: see text] is developed using the Landau-Devonshire approach with two order parameters. The fourth-order thermodynamic potential allowed to explain the shape of the polarization hysteresis loops experimentally observed at different temperatures.
V B, Shirokov, A V, Pavlenko, Yu I, Yuzyuk   +2 more
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Domain Engineered Relaxor Ferroelectric Single Crystals

Continuum Mechanics and Thermodynamics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, T., Lynch, C. S.
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Glassy polarization behavior of relaxor ferroelectrics

Physical Review B, 1992
The polarization behavior of La-modified lead zirconate titanate relaxors has been investigated for various electrical and thermal histories. The field-cooled and zero-field-cooled behaviors were both studied. The magnitude of both polarizations were found to be equal above a critical temperature.
, Viehland, , Li, , Jang, , Cross, , Wuttig   +4 more
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