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Relaxor ferroelectrics and related superglasses
Ferroelectrics, 2019AbstractMesoscopic 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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Dielectric response of ferroelectric relaxors
Solid State Communications, 2000Abstract The real and imaginary parts of dielectric permittivities of a ferroelectric relaxor are studied by the Monte Carlo (MC) simulation as a function of frequency and temperature. The simulation results are analyzed by the fluctuation–dissipation theory (FDT). In contrast to the previous results (Appl. Phys. Lett.
Jiann-Shiun Yuan +3 more
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Luminescence and Optical Properties of Relaxor Ferroelectrics
Ferroelectrics, 2005The optical absorption spectrum, luminescence and photoconductivity on single crystals PbMg1/3Nb2/3O3 and on ceramics Pb0.91La0.09(Zr0.65Ti0.35)O 3 are investigated in the wide temperature range. The luminescence spectrum correlates with the photoconductivity spectrum.
Zverev D. +6 more
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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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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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Charge Localization in the Model of Relaxor Ferroelectrics
Ferroelectrics, 2003Phenomenological approach to a relaxor theory is developed and some experimental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature region in PbMg 1/3 Nb 2/3 O 3 . On the basis of this data the density of states on the impurity band and
M. F. Sadykov +4 more
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Optical Properties and Model of Relaxor Ferroelectrics
Ferroelectrics, 2003Phenomenological approach to a relaxor theory is developed and some experi-mental results in the support of this theory are received. The optical absorption spectrum, luminescent emission and photoconductivity are investigated in the wide temperature region in PbMg 1/3 Nb 2/3 O 3 .
S. I. Nikitin +4 more
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Dynamics in relaxor ferroelectric polymers
14th IEEE International Symposium on Applications of Ferroelectrics, 2004. ISAF-04. 2004, 2005Normal ferroelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer have been converted into relaxor ferroelectrics by introducing appropriate amount of defects into the original polar crystallites, which is achieved either by high-energy electron irradiation or by copolymerizing with a third bulky monomer 1,1-chlorofluoroethylene (
Qiming Zhang +7 more
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Development of “fragility” in relaxor ferroelectrics
Journal of Applied Physics, 2014Relaxor ferroelectrics (RFs), a special class of the disordered crystals or ceramics, exhibit a pronounced slowdown of their dynamics upon cooling as glass-forming liquids, called the “Super-Arrhenius (SA)” relaxation. Despite great progress in glass-forming liquids, the “fragility” property of the SA relaxation in RFs remains unclear so far.
Lan Chen +6 more
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Noise and Aging of Relaxor Ferroelectrics
AIP Conference Proceedings, 2003Aging and noise are used to elucidate the types of frozen order formed in the relaxor regime. In PMN, PMN with 10% PT, and PLZT aging deep in the relaxor regime shows several features characteristic of spinglasses, including multiple independent susceptibility ‘holes’ formed at different aging temperatures.
Lambert K. Chao +2 more
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Depolarization in a photosensitive relaxor ferroelectric
Physics of the Solid State, 2007This paper reports a study of depolarization of a photosensitive relaxor ferroelectric Sr0.61Ba0.39Nb2O6 with 0.44 at. % La and 0.023 at. % Ce impurities at room temperature and under illumination of up to 0.22 mW/cm2 in the absorption band of the crystal.
V. V. Gladkiĭ +2 more
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