Results 21 to 30 of about 82,292 (297)
Small Structures, 2023 Li‐rich rocksalt oxides are promising cathode materials for lithium‐ion batteries due to their large capacity and energy density, and their ability to use earth‐abundant elements.
Jianping Huang +7 more
doaj +1 more source
SrTiO3 termination control: a method to tailor the oxygen exchange kinetics
Materials Research Letters, 2020 We provide insights into the influence of surface termination on the oxygen vacancy incorporation for the perovskite model material SrTiO $_3 $ during annealing in reducing gas environments.
Felix V. E. Hensling +4 more
doaj +1 more source
Intrinsic Oxygen Vacancy and Extrinsic Aluminium Dopant Interplay: A Route to the Restoration of Defective TiO$_2$ [PDF]
, 2014 Density functional theory (DFT) and DFT corrected for on-site Coulomb interactions (DFT+U) calculations are presented on Aluminium doping in bulk TiO$_2$ and the anatase (101) surface.
Bowler, David R., O'Rourke, Conn
core +2 more sources
A study of vacancy defects related to gray tracks in KTiOPO4 (KTP) using positron annihilation
AIP Advances, 2014 For the first time to our knowledge, positron annihilation spectroscopy (PAS) was used to study vacancy defects in KTiOPO4 (KTP) single crystals. Positron annihilation lifetime spectroscopy combined with dielectric measurements identified the existence ...
Yang Zhang +5 more
doaj +1 more source
Oxygen permeation modelling of perovskites [PDF]
, 1992 A point defect model was used to describe the oxygen nonstoichiometry of the perovskites La0.75Sr0.25CrO3, La0.9Sr0.1FeO3, La0.9Sr0.1CoO3 and La0.8Sr0.2MnO3 as a function of the oxygen partial pressure.
Bouwmeester, Henny J.M. +5 more
core +2 more sources
Pressure Destabilizes Oxygen Vacancies in Bridgmanite [PDF]
Journal of Geophysical Research: Solid Earth, 2021 AbstractBridgmanite may contain a large proportion of ferric iron in its crystal structure in the forms of FeFeO3and MgFeO2.5components. We investigated the pressure dependence of FeFeO3and MgFeO2.5contents in bridgmanite coexisting with MgFe2O4‐phase and with or without ferropericlase in the MgO‐SiO2‐Fe2O3ternary system at 2,300 K, 33 and 40 GPa ...
Fei, Hongzhan +7 more
openaire +2 more sources
Hybrid functional study on the ferroelectricity of domain walls with O-vacancies in PbTiO3
Mechanical Engineering Journal, 2015 Nonlinear defect interactions between the 180° domain wall and oxygen-vacancies (O-vacancies) in PbTiO3, and the characteristic ferroelectricity due to the interactions are investigated using first-principles calculations based on the hybrid Hartree-Fock
Shogo TOMODA +4 more
doaj +1 more source
Nano-Micro Letters, 2021 Engineering oxygen vacancy formation and distribution is a powerful route for controlling the oxygen sublattice evolution that affects diverse functional behavior.
Wenrui Zhang +8 more
doaj +1 more source
Oxygen vacancy induced electronic structure variation in the La0.2Sr0.8MnO3 thin film
AIP Advances, 2019 Oxygen vacancy in different oxide systems shows up as a crucial parameter in modulation of the emerging application-oriented functionalities. A systematic exploration on the relation between oxygen vacancy and electronic structure of the La0.2Sr0.8MnO3 ...
Jiali Zhao +8 more
doaj +1 more source
Controlled manipulation of oxygen vacancies using nanoscale flexoelectricity [PDF]
Nature Communications, 2017 AbstractOxygen vacancies, especially their distribution, are directly coupled to the electromagnetic properties of oxides and related emergent functionalities that have implications for device applications. Here using a homoepitaxial strontium titanate thin film, we demonstrate a controlled manipulation of the oxygen vacancy distribution using the ...
Saikat Das +10 more
openaire +5 more sources