Results 51 to 60 of about 20,019 (258)
Chiral structures of electric polarization vectors quantified by X-ray resonant scattering
Nature Communications, 2022 The polar chiral texture of the vortex or skyrmion structure in ferroelectric oxide PbTiO3/SrTiO3 superlattice attracts attention. Here, the authors report a theoretical framework to probe emergent chirality of electrical polarization textures.
Kook Tae Kim +21 more
doaj +1 more source
Advanced Science, EarlyView.Based on orbital magnetic moment control, a material design strategy is proposed for a giant converse magnetoelectric effect in multiferroic heterostructures. This study will pioneer a promising route toward low‐power spintronic devices with an electric field.
Takamasa Usami +5 more
wiley +1 more source
, 2005 We find an unexpected tetragonal-to-monoclinic-to-rhombohedral-to-cubic phase transition sequence induced by pressure, and a morphotropic phase boundary in a pure compound using first-principles calculations.
D. J. Singh +4 more
core +1 more source
Theoretical Model Construction of Piezoelectric Coefficient of PbTiO3 Nanoparticles
Chemical Engineering Transactions, 2017 This paper aims to explain the size dependence of piezoelectric coefficient d33(D) of PbTiO3 nanoparticles. For this purpose, a theoretical model was created for the size-dependent piezoelectric coefficient, considering the Curie temperature for small ...
Shuai Zhang, Lei Chen
doaj +1 more source
Engineering polar vortex from topologically trivial domain architecture
Nature Communications, 2021 The majority of polar structures emerging naturally in ferroelectrics are topologically trivial. Here, the authors demonstrate reconstruction of topologically trivial strip-like domain architecture into arrays of polar vortex in (PbTiO3)10/(SrTiO3)10 ...
Congbing Tan +17 more
doaj +1 more source
Advanced Science, EarlyView.This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li +8 more
wiley +1 more source
Ab initio study of BaTiO3 and PbTiO3 surfaces in external electric fields
, 2001 For the ferroelectric perovskite compounds BaTiO3 and PbTiO3, we have studied the effects of external electric fields on the structural properties of the (001) surfaces. The field-induced changes in the surface interlayer spacings and bucklings have been
Meyer, B., Vanderbilt, David
core +1 more source
Lattice dynamics of BaTiO3, PbTiO3 and PbZrO3: a comparative first-principles study [PDF]
, 1999 The full phonon dispersion relations of lead titanate and lead zirconate in the cubic perovskite structure are computed using first-principles variational density-functional perturbation theory, with ab initio pseudopotentials and a plane-wave basis set.
Cockayne, E. +3 more
core +2 more sources
Indonesian Journal of Chemistry, 2016 Synthesis of graphite/PbTiO3 composite as a catalyst in photodegradation and photoelectrodegradation process of methyl orange have been conducted. The purposes of this research are to study the effect of radiation time, composition of composite, voltage ...
Candra Purnawan +2 more
doaj +1 more source
Aging in epitaxial ferroelectric PbTiO3 films [PDF]
Journal of Advanced Dielectrics, 2016 Ability of epitaxial perovskite oxide ferroelectric films to maintain a poled polarization state on a long-term scale is crucial for advanced devices employing such films.
Jari Hannu +4 more
doaj +1 more source