Results 21 to 30 of about 20,019 (258)

Effects of temperature and concentration of La in the form of A1 transverse optical phonon in the PbTiO3 system Efeitos da temperatura e concentração de La na forma de fótons ópticos transversais A1 no sistema PbTiO3

open access: yesCerâmica, 2012
The structural phase transition from ferroelectric to paraelectric was studied by Raman scattering in the ceramic lead titanate (PbTiO3) doped with lanthanum (La).
M. R. Joya, J. J. Barba-O, P. S. Pizani
doaj   +1 more source

Disordered ferroelectricity in the PbTiO3/SrTiO3 superlattice thin film

open access: yesAPL Materials, 2017
The PbTiO3/SrTiO3 superlattice thin films with a low volume fraction of PbTiO3 have not attracted much interest because they are thought to exhibit only a paraelectric state.
Gi-Yeop Kim   +12 more
doaj   +1 more source

Nanoscale domain engineering in SrRuO3 thin films

open access: yesAPL Materials, 2023
We investigate nanoscale domain engineering via epitaxial coupling in a set of SrRuO3/PbTiO3/SrRuO3 heterostructures epitaxially grown on (110)o-oriented DyScO3 substrates.
Céline Lichtensteiger   +7 more
doaj   +1 more source

Thermal stability studies of alternating current poled Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals grown by solid-state crystal growth

open access: yesMaterials Research Letters, 2023
Thermal stabilities of relaxor-PbTiO3 single crystals are of great importance due to their limited operational temperatures in devices. Herein, to elucidate how poling conditions influence thermal stabilities, we investigated direct current (DC) and ...
Hwang-Pill Kim   +5 more
doaj   +1 more source

Polarization-controlled modulation doping of a ferroelectric from first principles [PDF]

open access: yes, 2017
In a ferroelectric field effect transistor (FeFET), it is generally assumed that the ferroelectric gate plays a purely electrostatic role. Recently it has been shown that in some cases, which could be called 'active FeFETs', electronic states in the ...
Liu, Xiaohui   +2 more
core   +3 more sources

Diffused morphotropic phase boundary in relaxor-PbTiO3 crystals: High piezoelectricity with improved thermal stability

open access: yes, 2020
Solid solution ferroelectrics are the most widely used piezoelectric material for numerous electromechanical applications, including sensors, actuators, and transducers.
Gang Liu   +3 more
semanticscholar   +1 more source

Enhancing polarization by electrode-controlled strain relaxation in PbTiO3 heterostructures

open access: yesAPL Materials, 2016
A large remanent polarization close to theoretical value 80 μC/cm2 of bulk PbTiO3 is achieved in epitaxial heterostructures of (120–600)-nm-thick PbTiO3 films grown by pulsed laser deposition on (001) SrTiO3 substrate using a 100-nm-thick SrRuO3 bottom ...
J. Peräntie   +4 more
doaj   +1 more source

Improving the Functional Control of Aged Ferroelectrics using Insights from Atomistic Modelling [PDF]

open access: yes, 2017
We provide a fundamental insight into the microscopic mechanisms of the ageing processes. Using large scale molecular dynamics simulations of the prototypical ferroelectric material PbTiO3, we demonstrate that the experimentally observed ageing phenomena
Chapman, J. B. J.   +3 more
core   +2 more sources

Theory of PbTiO3, BaTiO3, and SrTiO3 Surfaces

open access: yes, 1999
First-principles total-energy calculations are carried out for (001) surfaces of the cubic perovskite ATiO3 compounds PbTiO3, BaTiO3, and SrTiO3. Both AO-terminated and TiO2-terminated surfaces are considered, and fully-relaxed atomic configurations are ...
Meyer, B.   +2 more
core   +2 more sources

Coexistence of antiferrodistortive and ferroelectric distortions at the PbTiO$_3$ (001) surface

open access: yes, 2004
The c(2$\times$2) reconstruction of (001) PbTiO$_3$ surfaces is studied by means of first principles calculations for paraelectric (non-polar) and ferroelectric ([001] polarized) films.
A. Munkholm   +5 more
core   +1 more source

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