Results 81 to 90 of about 11,585 (198)

Ferroelectric Oxide Nanocomposites with Trimodal Pore Structure for High Photocatalytic Performance

open access: yesNano-Micro Letters, 2019
An effective method to improve the photocatalytic performances of powder catalysts is to use the internal electric field from ferroelectrics to separate photogenerated charge carriers.
Tingting Xu   +3 more
doaj   +1 more source

Electrically driven octahedral rotations in SrTiO3 and PbTiO3

open access: yes, 2012
We investigate the oxygen octahedral rotations that occur in two perovskites, SrTiO3 and PbTiO3, as a function of applied three-dimensional electric displacement field, allowing us to map out the phase diagram of rotations in both the paraelectric and ...
Hong, Jiawang, Vanderbilt, David
core   +1 more source

Obtención de PbTiO3 vía semillado de geles

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1999
Lead Titanate has been prepared by a sol-gel method using titanium alkoxide and lead acetate. The addition of solid PbTiO3 nanometer-size seeding particles (5wt%) into the precursor solution plays a crucial role during the crystallisation process ...
Durán, P.   +5 more
doaj  

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

open access: yesAdvanced Materials, Volume 38, Issue 16, 17 March 2026.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li   +6 more
wiley   +1 more source

Structural and morphological characterization of rare earth modified lead titanate Caracterização estrutural e morfológica de titanatos de chumbo modificados por terras raras

open access: yesCerâmica, 2007
Rare earth modified lead titanate powders Pb1-xRExTiO3 (REPT), x = 0.01, 0.05, 0.07 and RE = Yb, Y, were prepared by the Pechini method. The materials were calcined under flowing oxygen at different temperatures from 300 to 700 ºC.
F. C. D. Lemos   +5 more
doaj   +1 more source

Domain Wall Orientations in Ferroelectric Superlattices Probed with Synchrotron X-Ray Diffraction

open access: yes, 2018
Ferroelectric domains in PbTiO$_3$/SrTiO$_3$ superlattices were studied using synchrotron X-ray diffraction. Macroscopic measurements revealed a change in the domain wall orientation from $\left\lbrace 100 \right\rbrace $ to $\left\lbrace 110 \right ...
Fernandez-Peña, Stéphanie   +4 more
core   +1 more source

Ferroelectricity and tetragonality in ultrathin PbTiO3 films

open access: yesPhysical review letters, 2004
4 pages, Tex, 3 figures Update: A few changes were made. These are mainly more explicit references to the literature regarding the Ginzburg-Landau-Devonshire ...
Lichtensteiger, C.   +3 more
openaire   +4 more sources

Tuning the Phase Structure and Electrical Properties of BNKT‐Based Ceramics via Li+ Doping

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 6, 16 March 2026.
Li+‐doped Bi0.5[Na0.84‐xK0.16Lix]0.5TiO3 lead‐free piezoelectric ceramics are fabricated. The optimized composition delivers a high piezoelectric coefficient d33 and elevated depolarization temperature Td. It also shows large electrostrain and high Curie temperature, greatly extending the working temperature range for BNT‐based piezoelectric ...
Guangzhi Dong   +9 more
wiley   +1 more source

Designing of metallic nanocrystals embedded in non-stoichiometric perovskite nanomaterial and its surface-electronic characteristics

open access: yesScientific Reports, 2017
Engineering of novel functional nanocomposite as like as the metallic nanocrystals supported non-stoichiometric perovskite nanomaterial in controlled parameters (size, shape and ratio of chemical characteristics) is a challengeable task. In this context,
Jagadeesh Suriyaprakash   +7 more
doaj   +1 more source

Propriedades eletrônicas e estruturais do PbTiO3: teoria do funcional de densidade aplicada a modelos periódicos Structural and electronic properties of PbTio3: density functional theory applied to periodic models

open access: yesQuímica Nova, 2005
Calculations based on density functional theory at the B3LYP hybrid functional level applied to periodic models have been performed to characterize the structural and electronic properties of PbTiO3.
Sérgio Ricardo de Lázaro   +3 more
doaj   +1 more source

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