Results 61 to 70 of about 11,585 (198)

Investigating domain structures and superdomains in ferroelectric PbTiO3 based heterostructures on DyScO3

APL Materials
This work focuses on the complex ferroelastic/ferroelectric domain structure in the prototypical ferroelectric PbTiO3 epitaxially strained on (110)o-oriented DyScO3 substrates, with a 22 nm-thick bottom SrRuO3 electrode. High quality epitaxial growth has
L. Tovaglieri, M. Hadjimichael, P. Torruella, C.-Y. Hsu, L. Korosec, D. T. L. Alexander, P. Paruch, J.-M. Triscone, C. Lichtensteiger   +8 more
doaj   +1 more source

Poling-free relaxor-PbTiO3 single crystals

Journal of Materiomics
Relaxor-PbTiO3 ferroelectric single crystals have drawn attention aiming at high-end piezoelectric applications thanks to their excellent piezoelectric properties.
Hwang-Pill Kim, Geon-Ju Lee, Ju-Hyeon Lee, Jae-Hyeon Cho, Hye-Lim Yu, Woo-Seok Kang, Joo-Hee Kang, Ho-Yong Lee, Wook Jo   +8 more
doaj   +1 more source

Sol-gel processing and physic-chemical characterization of La and Ce doped lead titanate ceramics

MATEC Web of Conferences, 2013
PbTiO3 (PT) sol gel processed powders doped with lanthanum (PLT14) and cerium (PLCexT14, x = 1; 3; 6; 10) were characterized by XRD and Raman spectroscopy. The samples crystallize in a pure perovskite phase at temperatures smaller than those reported for
Guaaybess Y., Maanan M., Adhiri R., Moussetad M., El Mesbahi A., Sayouri S., Zarhouni L.   +6 more
doaj   +1 more source

Estudio químico-cuántico de los defectos producidos por las vacancias de oxígeno en los cristales de Titanato de plomo PbTiO3

Ingenius: Revista de Ciencia y Tecnología, 2008
Estudio químico-cuántico de los defectos producidos por las vacancias de oxígeno en los cristales de Titanato de plomo ...
Arvids Stashans, Sheyla Serrano, P. Medina   +2 more
doaj   +1 more source

Tuning of the depolarization field and nanodomain structure in ferroelectric thin films

, 2014
The screening efficiency of a metal-ferroelectric interface plays a critical role in determining the polarization stability and hence the functional properties of ferroelectric thin films.
Fernandez-Pena, Stéphanie, Lichtensteiger, Céline, Triscone, Jean-Marc, Weymann, Christian, Zubko, Pavlo   +4 more
core   +2 more sources

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

, 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., Cohen, R. E., Duffy, D. M., Kimmel, A. V.   +3 more
core   +2 more sources

Implications of Transient Negative Capacitance Effect in Ferroelectric Polarization Dynamics

Advanced Electronic Materials, EarlyView.
Transient voltage artifacts observed during ferroelectric switching are shown to originate from measurement circuitry rather than intrinsic negative capacitance. By correlating switching current, time scale, and series resistance, this work establishes practical design rules for reliable pulse‐switching experiments and circuit integration of ...
Marin Alexe
wiley   +1 more source

Realizing negative thermal expansion over an extended temperature range in PbTiO3-based perovskites

Journal of Advanced Ceramics
Negative thermal expansion (NTE) is fascinating, as it involves a material’s volume contraction rather than expansion upon heating. Although NTE lattices typically have highly flexible frameworks, the magnitude of NTE is often very small, and they ...
Zhao Pan, Fengyi Zhou, Mengqi Ye, Duo Wang, Qiumin Liu, Takumi Nishikubo, Xubin Ye, Xiao Wang, Jin Liu, Nianpeng Lu, Shogo Kawaguchi, Masaki Azuma, Youwen Long   +12 more
doaj   +1 more source

Discovery of Novel Materials with Giant Dielectric Constants via First‐Principles Phonon Calculations and Machine Learning

Advanced Intelligent Discovery, EarlyView.
We discovered novel materials with giant dielectric constants by combining first‐principles phonon calculations and machine learning. Screening 525 perovskites identified six candidates. RbNbO3 was synthesized under pressure and showed ε ≈ 800–1000. This validates our framework as a powerful tool for high‐performance dielectric materials discovery.
Hiroki Moriwake, Kazuki Shitara, Rie Yokoi, Takeharu Kato, Isao Tanaka, Ayako Yamamoto, Kimitoshi Murase, Yosuke Hamasaiki, Yoshitaka Ehara, Mitsuru Itoh   +9 more
wiley   +1 more source

Preparation and characterization of PbTi0(3) ceramics modified by a natural mixture of rare earth oxides of xenotime [PDF]

Materials Research, 2013
Lead titanate ceramics modified by xenotime (Xm) with nominal composition (Pb, Xm)TiO3, Xm 10 or 15 mol %, were prepared by the conventional oxide mixture technique. Xenotime is a natural mineral consisting of a mixture of rare earth oxides.
Jair Baltazar-Rodrigues, Pedro Rodrigues Jr, Gerson K. da Cruz, Manuel H. Lente, José A. Eiras   +4 more
doaj   +2 more sources