Results 21 to 30 of about 112,711 (289)
Oxygen vacancies in strained SrTiO$_{3}$ thin films: formation enthalpy and manipulation [PDF]
, 2017 We report the enthalpy of oxygen vacancy formation in thin films of electron-doped SrTiO$_{3}$, under different degrees of epitaxial stress. We demonstrate that both compressive and tensile strain decrease this energy at a very similar rate, and promote ...
Iglesias, L. +3 more
core +6 more sources
Micromachines, 2023 Oxygen vacancies are a major factor that controls the electrical characteristics of the amorphous indium-gallium-zinc oxide transistor (a-IGZO TFT). Oxygen vacancies are affected by the composition ratio of the a-IGZO target and the injected oxygen flow ...
Youngmin Han +4 more
doaj +1 more source
Structural phases driven by oxygen vacancies at the La0.7Sr0.3MnO3/SrTiO3 hetero-interface [PDF]
, 2015 An oxygen vacancy driven structural response at the epitaxial interface between La0.7Sr0.3MnO3 films and SrTiO3 substrates is reported. A combined scanning transmission electron microscopy and electron energy loss spectroscopy study reveal the presence ...
Boschker, J.E. +6 more
core +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
Localized versus itinerant states created by multiple oxygen vacancies in SrTiO3
New Journal of Physics, 2015 Oxygen vacancies in strontium titanate surfaces (SrTiO _3 ) have been linked to the presence of a two-dimensional electron gas with unique behavior. We perform a detailed density functional theory study of the lattice and electronic structure of SrTiO _3
Harald O Jeschke +2 more
doaj +1 more source
International Journal of Electrochemical Science, 2020 Introducing oxygen vacancy into oxides has become an effective strategy for enhancing the electrochemical performance. Herein, a series of identical two-dimensional BiOI nanosheets with various concentration of oxygen vacancies are rationally fabricated ...
Huichao Wang +7 more
doaj +1 more source
Ab initio study of magnetism at the TiO2/LaAlO3 interface [PDF]
, 2010 In this paper we study the possible relation between the electronic and magnetic structure of the TiO2/LaAlO3 interface and the unexpected magnetism found in undoped TiO2 films grown on LaAlO$_3$.
A Hassini +24 more
core +2 more sources
Anisotropic chemical expansion due to oxygen vacancies in perovskite films
Scientific Reports, 2021 In scientifically intriguing and technologically important multifunctional ABO3 perovskite oxides, oxygen vacancies are most common defects. They cause lattice expansion and can alter the key functional properties.
M. Tyunina +3 more
doaj +1 more source
Impact of dielectric properties on ionic conductivity of Ce0.9Sm0.1O1.95 via defect interaction
Materials Letters: X, 2021 This study mainly investigates the defect interaction mediated ionic conductivity of Ce0.9Sm0.1O1.95. The ionic conductivity mainly depends on the concentration of free oxygen vacancies.
Sk. Anirban, Abhigyan Dutta
doaj +1 more source
Anisotropic Effects of Oxygen Vacancies on Electrochromic Properties and Conductivity of $\gamma$-Monoclinic WO$_3$ [PDF]
, 2016 Tungsten trioxide (WO$_3$) is a paradigmatic electrochromic material, whose peculiar optical properties in the presence of oxygen vacancies or intercalated alkali atoms have been observed and investigated for a long time.
Bottani, Carlo Enrico +4 more
core +2 more sources