Results 41 to 50 of about 20,019 (258)
First-principles study of the electrooptic effect in ferroelectric oxides
, 2003 We present a method to compute the electrooptic tensor from first principles, explicitly taking into account the electronic, ionic and piezoelectric contributions. It allows us to study the non-linear optic behavior of three ferroelectric ABO_3 compounds
A. Räuber +8 more
core +1 more source
High Curie temperature BiInO3-PbTiO3 films [PDF]
Journal of Applied Physics, 2014 High Curie temperature piezoelectric thin films of xBiInO3-(1-x)PbTiO3 (x = 0.10, 0.15, 0.20, and 0.25) were prepared by pulsed laser deposition. It was found that the tetragonality of films decreased with increasing BI content. The dielectric constant and transverse piezoelectric coefficient (e31,f) exhibit the highest values of 665 and −13.6 C/m2 at ...
Sun Young, Lee +2 more
openaire +2 more sources
Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook
Advanced Materials Technologies, EarlyView.A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi +12 more
wiley +1 more source
Theoretical investigations of the bulk modulus in the tetra-cubic transition of PbTiO3 material
Química Nova, 2014 Resulting from ion displacement in a solid under pressure, piezoelectricity is an electrical polarization that can be observed in perovskite-type electronic ceramics, such as PbTiO3, which present cubic and tetragonal symmetries at different pressures ...
Renan A. P. Ribeiro +1 more
doaj +1 more source
Diffusion–Model–Driven Discovery of Ferroelectrics for Photocurrent Applications
Advanced Science, EarlyView.We developed a diffusion model–based generative AI and high‐throughput screening framework that accelerates the discovery of photovoltaic ferroelectrics. By coupling AI driven crystal generation with machine learning and DFT screening, we identified Ca3P2 and LiCdP as new ferroelectric materials exhibiting strong polarization, feasible switching ...
Byung Chul Yeo +3 more
wiley +1 more source
Ferroelectric domain walls in PbTiO3 are effective regulators of heat flow at room temperature.
Nano letters (Print), 2019 Achieving efficient spatial modulation of phonon transmission is an essential step on the path to phononic circuits using "phonon currents." With their intrinsic and reconfigurable interfaces-domain walls (DWs)-ferroelectrics are alluring candidates to ...
E. Langenberg +15 more
semanticscholar +1 more source
Efficacy of the DFT+U formalism for modeling hole polarons in perovskite oxides
, 2014 We investigate the formation of self-trapped holes (STH) in three prototypical perovskites (SrTiO3, BaTiO3, PbTiO3) using a combination of density functional theory (DFT) calculations with local potentials and hybrid functionals.
Erhart, Paul +3 more
core +1 more source
Advanced Science, EarlyView.Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan +13 more
wiley +1 more source
Chinese Journal of Catalysis, 2020 Combining microwave radiation with photocatalytic systems is a promising method to inhibit photogenerated electron-hole recombination and enhance the photocatalytic reaction performance.
J. Wen +3 more
semanticscholar +1 more source
Anomalous enhancement of tetragonality in PbTiO3 induced by negative pressure
, 2003 Using a first-principles approach based on density-functional theory, we find that a large tetragonal strain can be induced in PbTiO3 by application of a negative hydrostatic pressure. The structural parameters and the dielectric and dynamical properties
A. García +26 more
core +1 more source