Results 141 to 150 of about 8,790 (190)

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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Relaxor ferroelectric devices

Ferroelectrics, 1994
Abstract Dielectric properties of relaxor ferroelectrics are characterized by giant and temperature-insensitive dielectric constants and large frequency dependence (dielectric relaxation), and therefore useful for high permittivity capacitors. Relaxor ferroelectrics also reveal superior characteristics in electrostriction and electrooptic effects ...
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Relaxing with relaxors: a review of relaxor ferroelectrics

Advances in Physics, 2011
Relaxor ferroelectrics were discovered in the 1950s but many of their properties are not understood. In this review, we shall concentrate on materials such as PMN (PbMg1/3Nb2/3O3), which crystallize in the cubic perovskite structure but with the Mg ion, charge 2+, and the Nb ion, charge 5+, randomly distributed over the B site of the perovskite ...
R. A. Cowley, S. N. Gvasaliya, S. G. Lushnikov, B. Roessli, G. M. Rotaru   +4 more
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Normal ferroelectric to ferroelectric relaxor conversion in fluorinated polymers and the relaxor dynamics

Journal of Materials Science, 2006
To elucidate the molecular origin of the polarization dynamics in the ferroelectric relaxor poly(vinylidene fluoride—trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) terpolymer, a broadband dielectric study was carried out in the frequency range from 0.01 Hz to 10 MHz and temperatures from −150?C to 120?C for the terpolymer and a normal ...
Shihai Zhang, Rob J. Klein, Kailiang Ren, Baojin Chu, Xi Zhang, James Runt, Q. M. Zhang   +6 more
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Dielectric relaxor and ferroelectric relaxor: Bi-doped paraelectric SrTiO3

Journal of Applied Physics, 2002
In this article, we report the evolution of the dielectric behavior from a dielectric relaxor to a ferroelectric relaxor with variation of Bi concentration in (Sr1−1.5xBix)TiO3 (0⩽x⩽0.2). In the doping range 0.0005⩽x⩽0.002, two dielectric modes A and B are induced.
Chen Ang, Zhi Yu
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Relaxor ferroelectrics with lanthanum perovskites

ISAF '92: Proceedings of the Eighth IEEE International Symposium on Applications of Ferroelectrics, 2003
Lanthanum perovskite compounds La(B/sub 1/2//sup I/B/sub 1/2//sup II/)O/sub 3/ (B/sup I/=Ni,Co,Mg; B/sup II/=Ti) are studied as candidates for stabilizers to form perovskite-type Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/ (PZN)-based ceramics. A conventional sintering technique is used to prepare ceramic samples with PZN-based solid solution. The ratios of the
T. Takenaka, T. Kanegae
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Relaxor ferroelectrics and related superglasses

Ferroelectrics, 2019
AbstractMesoscopic ferroic glasses such as martensitic strain glass Ti50−x Ni50+x, magnetic cluster glass La0.7Ca0.3Mn0.7Cd0.3O3, and superdipolar relaxor PbMg1/3Nb2/3O3 (PMN) undergo glass transit...
Kleemann, Wolfgang, Dec, Jan
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