Results 61 to 70 of about 1,694 (180)

Obtención de PbTiO₃ vía semillado de geles

Boletín 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., Moure, C., Saniger, J., Fernández, J. F., Villafuerte-Castrejón, M. E., Tartaj, J.   +5 more
doaj  

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

Scientific 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, Y. B. Xu, Y. L. Zhu, L. X. Yang, Y. L. Tang, Y. J. Wang, S. Li, X. L. Ma   +7 more
doaj   +1 more source

Ferroelectric Oxide Nanocomposites with Trimodal Pore Structure for High Photocatalytic Performance

Nano-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, Xuan Liu, Shulan Wang, Li Li   +3 more
doaj   +1 more source

Field‐Programmed Anisotropy in Magneto‐Piezoelectric Composites for Material‐Encoded Mechanoperception

Advanced Materials, Volume 38, Issue 48, 26 August 2026.
Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim, Yumin Kwon, Dabin Kim, Minsun Oh, Jin Young Jung, Dongyeong Gim, Kootak Hong, Jun Yeon Hwang, Sang‐Woo Kim, Minjeong Ha   +9 more
wiley   +1 more source

Polarization rotation associated critical phenomena in epitaxial PbTiO3 thin films near room temperature

AIP Advances, 2016
Strain-driven and temperature-driven monoclinic-orthorhombic phase transition in epitaxial PbTiO3 exhibit similar behavior under electric field, i.e., polarization discontinuity is reduced at the first-order ferroelectric-ferroelectric transition whose ...
Wenhui Ma
doaj   +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

Cerâmica, 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, D. M. A. Melo, P. S. de Lima, C. A. Paskocimas, E. Longo, J. E.C. da Silva   +5 more
doaj   +1 more source

Atomic substitution effects on the structural and vibrational properties of NixPb1-xTiO3: X-ray diffraction and Raman scattering investigations

AIP Advances, 2015
The effects of the atomic substitution of Pb by Ni in the PbTiO3 ferroelectric perovskite on the vibrational and structural properties was studied using x-ray diffraction and Raman scattering.
R. C. da Costa, T. A. de Toledo, J. W. M. Espinosa, P. S. Pizani   +3 more
doaj   +1 more source

Synergistically boosting charge separation and surface activity for efficient solar-powered cathodic metal protection

Carbon Neutrality
The escalating global energy demand has spurred the emergence of diverse solar-powered systems. As a typical example, photocathodic protection (PCP) is a promising technology to prevent metal corrosion via a “solar-electric-chemical” energy conversion ...
Hui Xie, Guangyao Nie, Yuchen Fang, Weihua Li, Shihe Yang, Fa-Qian Liu, Zheng Xing   +6 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

Química 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, Elson Longo, Armando Beltran, Júlio Ricardo Sambrano   +3 more
doaj   +1 more source

Manipulating topological transformations of polar structures through real-time observation of the dynamic polarization evolution

Nature Communications, 2019
Direct observation of the dynamic evolution of polar domain structures at atomic level remains challenging. Here, the authors report the observation of real-time topological transformations of polar structures in PbTiO3/SrTiO3 multilayers.
K. Du, M. Zhang, C. Dai, Z. N. Zhou, Y. W. Xie, Z. H. Ren, H. Tian, L. Q. Chen, Gustaaf Van Tendeloo, Z. Zhang   +9 more
doaj   +1 more source