Results 31 to 40 of about 33,110 (327)

PEROVSKITES AND OTHER FRAMEWORK STRUCTURE CRYSTALLINE MATERIALS (BOOK' FIRST PAGES AND PREFACE)

open access: yesMaterials and Devices, 2021
Perovskites are among the most famous materials due to their exceptional properties: they present nearly all existing types of interesting properties, in particular as ferroics or multiferroics, they may be insulators, (super)conductors, or ...
Saint-Grégoire P., Smirnov M.
doaj   +1 more source

First principles based atomistic modeling of phase stability in PMN-xPT

open access: yes, 2011
We have performed molecular dynamics simulations using a shell model potential developed by fitting first principles results to describe the behavior of the relaxor-ferroelectric (1-x)PbMg1/3Nb2/3O3-xPbTiO3 (PMN-xPT) as function of concentration and ...
Egami T   +7 more
core   +1 more source

Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates [PDF]

open access: yes, 2013
Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr_{0.70}Ba_{0.30}Nb_{2}O_{6} (SBN:70 -
Dec, J.   +3 more
core   +2 more sources

Enhanced Energy‐Storage Properties and Good Temperature Stability in 0.92(Sr0.7Bi0.2)TiO3–0.08Bi(Mg0.5Hf0.5)O3 Relaxor Ferroelectric Ceramic

open access: yesAdvanced Energy & Sustainability Research, 2021
Herein, the (1 − x)(Sr0.7Bi0.2)TiO3–xBi(Mg0.5Hf0.5)O3 (SBT–100xBMH, x = 0.04–0.10) relaxor ferroelectric ceramics are fabricated via the high‐temperature solid‐state reaction method.
Xi Kong   +3 more
doaj   +1 more source

Shear modulus in viscoelastic solid $^4$He

open access: yes, 2010
The complex shear modulus of solid $^4$He exhibits an anomaly in the same temperature region where torsion oscillators show a change in period. We propose that the observed stiffening of the shear modulus with decreasing temperature can be well described
Balatsky, Alexander V.   +2 more
core   +1 more source

Molecular mobility interpretation of the dielectric relaxor behavior in fluorinated copolymers and terpolymers [PDF]

open access: yes, 2013
Thermo Stimulated Current and Dynamic Dielectric Spectroscopy have been applied to investigate dielectric relaxation modes of poly(vinylidene-fluoride trifluoroethylene) copolymer and poly(vinylidene-fluoridetrifluoroethylene-chlorofluoroethylene ...
Capsal, Jean-Fabien   +2 more
core   +5 more sources

Barkhausen Noise in a Relaxor Ferroelectric

open access: yes, 2001
Barkhausen noise, including both periodic and aperiodic components, is found in and near the relaxor regime of a familiar relaxor ferroelectric, PbMg$_{1/3}$Nb$_{2/3}$O$_3$, driven by a periodic electric field.
D. Viehland   +12 more
core   +1 more source

Enhanced relaxor behavior and high energy storage efficiency in niobium substituted (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramics

open access: yesMaterials Research Express, 2022
The microstructure, dielectric properties, relaxor behavior, and energy storage efficiency of un-substituted and niobium (Nb) substituted (Ba _0.85 Ca _0.15 )(Zr _0.1 Ti _0.9 ) _1-x Nb _x O _3 (for x = 0, 0.02 and 0.05) samples prepared by the solid ...
Vineetha P   +4 more
doaj   +1 more source

Direct electrocaloric measurement of 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 films using scanning thermal microscopy [PDF]

open access: yes, 2016
We show that scanning thermal microscopy can measure reversible electrocaloric (EC) effects in <40 μm-thick ceramic films of the relaxor ferroelectric 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3, with the substrate present.

core   +1 more source

Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3

open access: yes, 2003
The relaxors Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PZN) and Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PMN) have very similar properties based on the dielectric response around the critical temperature $T_{c}$ (defined by the structural transition under the application
A. Lebon   +50 more
core   +1 more source

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