Results 151 to 160 of about 70,379 (187)

Optical Properties and Model of Relaxor Ferroelectrics

Ferroelectrics, 2003
Phenomenological 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 .
Mamin R., Migachev S., Nikitin S., Sadykov M., Zverev D.   +4 more
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Luminescence and Optical Properties of Relaxor Ferroelectrics

Ferroelectrics, 2005
The 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., Migachev S., Mamin R., Nikitin S., Sadykov M., Başaran E., Mikailov F.   +6 more
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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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Charge Localization in the Model of Relaxor Ferroelectrics

Ferroelectrics, 2003
Phenomenological 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
Mamin R., Migachev S., Nikitin S., Sadykov M., Zverev D.   +4 more
openaire   +3 more sources

Phenomenological theory of uniaxial relaxor ferroelectrics

Journal of Physics: Condensed Matter, 2016
Abstract A phenomenological thermodynamic theory of uniaxial relaxor strontium barium niobate B
V B, Shirokov, A V, Pavlenko, Yu I, Yuzyuk   +2 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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Dynamics of the freezing process in relaxor ferroelectrics

Physical Review B, 1995
The dynamics of the freezing process in relaxor ferroelectrics are investigated by Monte Carlo computer simulation. The concepts of ``frozen dipole'' and ``slow dipole'' are proposed according to the flipping frequency during the observation time of simulation.
, Gui, , Gu, , Zhang
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Piezoelectricity and ferroelectric cluster size in relaxor ferroelectrics

Applied Physics Letters, 2007
The dipole configuration and electromechanical behaviors of dipole-disorder induced relaxor ferroelectrics (RFs) are investigated using a phenomenological model. In comparison to normal ferroelectric lattice, the RF lattice shows spatially inhomogeneous cluster configuration but no breaking of the dipole orientation symmetry is identified.
L.-F. Wang, J.-M. Liu
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Soft modes in relaxor ferroelectrics

Phase Transitions, 1981
Abstract The fact that the polarization-related electrostrictive coefficients Q in the relaxor type ferro-electrics are almost an order of magnitude smaller than in most normal ferroelectric perovskites can be explained under the assumption that the temperature dependence of the soft-mode TO phonon frequency is given as ω2 TO = A(T — Tc ), where the ...
K. Uchino, S. Nomura, L E. Cross, R. E. Newnham   +3 more
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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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