Results 21 to 30 of about 83,687 (300)
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
First principles study of intrinsic point defects in hexagonal barium titanate [PDF]
, 2012 Density functional theory (DFT) calculations have been used to study the nature of intrinsic defects in the hexagonal polymorph of barium titanate. Defect formation energies are derived for multiple charge states and due consideration is given to finite ...
Allnatt A. R. +8 more
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
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
Molecular dynamics simulations of oxide memristors: crystal field effects [PDF]
, 2011 We present molecular-dynamic simulations of memory resistors (memristors) including the crystal field effects on mobile ionic species such as oxygen vacancies appearing during operation of the device.
A. M. Bratkovsky +4 more
core +2 more sources
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
Magnetically active vacancy related defects in irradiated GaN layers [PDF]
, 2012 We present the studies of magnetic properties of 2 MeV 4He+-irradiated GaN grown by metal-organic chemical-vapor deposition. Particle irradiation allowed controllable introduction of Ga-vacancy in the samples.
Kilanski, L. +3 more
core +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
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
Effect of atmosphere and dopants on sintering of SnO2 [PDF]
Science of Sintering, 2002 Tin oxide is an n type semiconductor material with a high covalent behavior. Mass transport in this oxide depends on the surface state promoted by atmosphere or by the solid solution of aliovalent oxide doping. The sintering and grain growth of this type
Varela J.A. +4 more
doaj +1 more source