Results 301 to 310 of about 33,110 (327)
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2008
So-called ferroelectric materials may be divided into two classes: ferroelectrics and relaxors (Table 30.1) [1].
Simon, Annie, Ravez, Jean
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So-called ferroelectric materials may be divided into two classes: ferroelectrics and relaxors (Table 30.1) [1].
Simon, Annie, Ravez, Jean
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Relaxor Ferroelectric Polymers
Ferroelectrics, 2006The 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 +8 more
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Polaron-Related Polar Clusters in Ferroelectric Relaxors And Novel Relaxor Systems
Radiation Effects and Defects in Solids, 2003A new mechanism of freezing phenomena and dielectric losses with Vogel-Fulcher law behaviour in ferroelectric relaxors of PMN-type is proposed. New possible relaxor systems including the ferroelectric-antiferromagnetic relaxor case are discussed in this connection.
V. S. Vikhnin, S. E. Kapphan
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Magnetic glassy behavior in ferroelectric relaxor type solid solutions: Magnetoelectric relaxor
Journal of Applied Physics, 2009Perovskite solid solution ceramics with compositions of 0.9Pb(Fe0.5Nb0.5)O3–0.1PbTiO3, 0.6Pb(Ni1∕3Nb2∕3)O3–0.4PbTiO3, and 0.6Pb(Co1∕3Nb2∕3)O3–0.4PbTiO3 were synthesized by the traditional solid state reaction method. Ferroelectric measurements revealed that these samples have well saturated polarization-electrical field loops.
Cheng, Zhenxiang +5 more
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Photostimulated conductivity in relaxors
Physics of the Solid State, 2004Photoconductivity of lead magnesium niobate is studied, and the spectral dependence of the photo-conductivity is measured in the vicinity of the permittivity maximum associated with a diffuse phase transition. Photostimulated currents due to the Dember effect are detected.
S. A. Migachev +2 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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AIP Conference Proceedings, 2001
A dynamic spherical random bond-random field (SRBRF) model based on the coupled polar cluster picture is formulated. Assuming stochastic flips of the cluster polarization, the Langevin equations of motion are written down, from which the linear and nonlinear dynamic dielectric permittivities are derived. A coupled SRBRF pseudospin phonon Hamiltonian is
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A dynamic spherical random bond-random field (SRBRF) model based on the coupled polar cluster picture is formulated. Assuming stochastic flips of the cluster polarization, the Langevin equations of motion are written down, from which the linear and nonlinear dynamic dielectric permittivities are derived. A coupled SRBRF pseudospin phonon Hamiltonian is
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Photostimulated phenomena in relaxors
Journal of Experimental and Theoretical Physics Letters, 2003The action of illumination on the conducting and dielectric properties of lead magnoniobate was investigated. The photostimulated currents were examined and the spectral dependence of photoconductivity in the region of diffuse phase transition was obtained.
Mamin R. +5 more
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Ferroelectrics, 2000
Abstract Relaxor properties of Sr0.61-xBa0.39Nb2O6:Cex 3+ (SBN61:Ce) are examined by dielectric spectroscopy, linear birefringence (LB) and optical second harmonic generation (SHG) as a function of frequency and temperature before and after poling.
P. Lehnen +4 more
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Abstract Relaxor properties of Sr0.61-xBa0.39Nb2O6:Cex 3+ (SBN61:Ce) are examined by dielectric spectroscopy, linear birefringence (LB) and optical second harmonic generation (SHG) as a function of frequency and temperature before and after poling.
P. Lehnen +4 more
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Applied Physics Letters, 2000
BaTiO 3 shows relaxation effects when minute concentrations of Bi+3 and Fe+3 are added in varying molar ratios. Addition of Bi+3 at the A site reduces the transition maximum (Tm), whereas Fe+3 addition at the B site reduces the value of dielectric constant.
M. Mahesh Kumar +2 more
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BaTiO 3 shows relaxation effects when minute concentrations of Bi+3 and Fe+3 are added in varying molar ratios. Addition of Bi+3 at the A site reduces the transition maximum (Tm), whereas Fe+3 addition at the B site reduces the value of dielectric constant.
M. Mahesh Kumar +2 more
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