Results 71 to 80 of about 20,019 (258)

Progress in Strain Engineering of 2D‐Integrated Heterostructures for Ultrasensitive Sensors

Advanced Science, EarlyView.
 . ABSTRACT Two‐dimensional (2D) integrated heterostructures have emerged as a cornerstone in the advancement of next‐generation sensor technologies. These heterostructures, which combine materials with different dimensionalities, have led to significant breakthroughs in sensing performance and device integration.
That Buu Ton, Tuan Sang Tran, Duc Khanh Tran, Van Thanh Dau, Dzung Viet Dao   +4 more
wiley   +1 more source

Large Negative Thermal Expansion Induced by Synergistic Effects of Ferroelectrostriction and Spin Crossover in PbTiO3-Based Perovskites. [PDF]

Chemistry of Materials, 2019
The discovery of unusual negative thermal expansion (NTE) provides the opportunity to control the common but much desired property of thermal expansion, which is valuable not only in scientific interests but also in practical applications.
Zhao Pan, Jun Chen, R. Yu, L. Patra, P. Ravindran, A. Sanson, R. Milazzo, A. Carnera, Lei Hu, Hajime Yamamoto, Yang Ren, Qingzhen Huang, Y. Sakai, T. Nishikubo, Takahiro Ogata, Xi’an Fan, Ya-wei Li, Guangqiang Li, H. Hojo, M. Azuma, X. Xing   +20 more
semanticscholar   +1 more source

Theory of hypothetical ferroelectric superlattices incorporating head-to-head and tail-to-tail 180$^\circ$ domain walls

, 2005
While electrical compatibility constraints normally prevent head-to-head (HH) and tail-to-tail (TT) domain walls from forming in ferroelectric materials, we propose that such domain walls could be stabilized by intentional growth of atomic layers in ...
David Vanderbilt, G. Kresse, Xifan Wu
core   +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

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

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

Nanopore-induced dielectric and piezoelectric enhancement in PbTiO3 nanowires

, 2020
Porous tetragonal PbTiO3 nanowires, synthesized through an intermediate pre-perovskite structure, exhibit distinct behaviors from those of the corresponding bulk PbTiO3.
Menghan Zhou, Tiannan Yang, Jianjun Wang, Z. Ren, Long-Qing Chen, C. Nan   +5 more
semanticscholar   +1 more source

Enhanced Lattice Polarization and Directed Charge Transport Toward Pt Surface Sites Accelerate the Volmer Step in Piezocatalytic H2 Evolution on Co‐Doped BiFeO3

Advanced Energy Materials, EarlyView.
We report a Pt‐decorated Co‐doped BiFeO3 (Pt/BCFO) piezocatalyst achieving an H2 evolution rate of 1896.4 µmol g−1 h−1. Co‐doping induces lattice distortion, enhancing piezoelectric polarization, while Pt sites promote water dissociation. Embedded in a poly(vinylidene fluoride) matrix, Pt/BCFO enables efficient mechanical energy harvesting and catalyst
Dian Zhang, Xiaowen Ruan, Lin Wang, Bin Cheng, Minghua Xu, Chunsheng Ding, Hongwei Huang, Sai Kishore Ravi   +7 more
wiley   +1 more source

Quantification of flexoelectricity in PbTiO3/SrTiO3 superlattice polar vortices using machine learning and phase-field modeling

Nature Communications, 2017
Flexoelectricity refers to electric polarization generated by heterogeneous mechanical strains, namely strain gradients, in materials of arbitrary crystal symmetries.
Q. Li, C. Nelson, S. Hsu, A. Damodaran, L. Li, A. Yadav, M. McCarter, L. Martin, R. Ramesh, Sergei V. Kalinin   +9 more
semanticscholar   +1 more source

Effect of in-plane strain anisotropy on (011) epitaxial BaTiO3 and PbTiO3 thin films

AIP Advances, 2017
Misfit strain phase diagrams of single-domain (011) epitaxial BaTiO3 and PbTiO3 thin films are computed using a thermodynamic phenomenological approach. In the case of (001) epitaxial films, the two orthogonal in-plane misfit strains are equivalent. For (
Wenhui Ma, Fei Wang
doaj   +1 more source