Results 91 to 100 of about 19,560 (246)

First-principles study of epitaxial strain in perovskites

, 2005
Using an extension of a first-principles method developed by King-Smith and Vanderbilt [Phys. Rev. B {\bf 49}, 5828 (1994)], we investigate the effects of in-plane epitaxial strain on the ground-state structure and polarization of eight perovskite oxides:
D. Vanderbilt, David Vanderbilt, J. B. Neaton, J. S. Speck, Karin M. Rabe, M. E. Lines, Oswaldo Diéguez   +6 more
core   +1 more source

Electric Field Modulation of Interlayer Coupling via Piezostrain in a Synthetic Antiferromagnet

Advanced Science, Volume 13, Issue 8, 9 February 2026.
Controlling the interlayer exchange coupling (IEC) in synthetic antiferromagnets (SAFs) using an electric field is a promising route toward energy‐efficient spintronic devices. In this study, electric field induced‐strain modulation of IEC in Co/Ru/Co SAF/PMN‐PT is demonstrated.
Yuichi Hisada, Sachio Komori, Keiichiro Imura, Chenyu Shen, Yoshihiro Gohda, Calvin Ching Ian Ang, Wen Siang Lew, Tomoyasu Taniyama   +7 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

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

Ferroelectricity and tetragonality in ultrathin PbTiO3 films

Physical 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., Triscone, J. M., Junquera, J., Ghosez, Philippe   +3 more
openaire   +4 more sources

Designing Memristive Materials for Artificial Dynamic Intelligence

Advanced Intelligent Discovery, Volume 2, Issue 1, February 2026.
Key characteristics required of memristors for realizing next‐generation computing, along with modeling approaches employed to analyze their underlying mechanisms. These modeling techniques span from the atomic scale to the array scale and cover temporal scales ranging from picoseconds to microseconds. Hardware architectures inspired by neural networks
Youngmin Kim, Ho Won Jang
wiley   +1 more source

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

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

Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping

, 2012
We use neutron scattering to characterize the acoustic phonons in the relaxor PMN and demonstrate the presence of an anisotropic damping mechanism directly related to short-range, polar correlations.
A. Bosak, C. Stock, D. Viehland, G. A. Smolenskii, G. Burns, G. Shirane, G. Xu, G. Xu, Guangyong Xu, H. Hiraka, H. Luo, I. Swainson, J.-F. Li, M. T. Dove, O. Delaire, P. M. Gehring, R. A. Cowley, S. B. Vakhrushev, S. E. Park, S. Kamba, Z.-G. Ye   +20 more
core   +1 more source

Neuromorphic Device Based on Material and Device Innovation toward Multimode and Multifunction

Advanced Intelligent Systems, Volume 8, Issue 1, January 2026.
In the era of big data, multimodal and multifunctional neuromorphic devices offer significant opportunities in designing AI hardware. In this work, recent advances about emerging material systems and novel device structures in this field are summarized in detail. Potential applications are reviewed.
Feng Guo, Hongda Ren, Yang Zhang, Jianhua Hao   +3 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