Results 11 to 20 of about 115,078 (291)
Ferromagnetic and insulating behavior of LaCoO3 films grown on a (001) SrTiO3 substrate. A simple ionic picture explained ab initio [PDF]
, 2017 This paper shows that the oxygen vacancies observed experimentally in thin films of LaCoO3 subject to tensile strain are thermodynamically stable according to ab initio calculations.
Brown, André EX +11 more
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Oxygen Vacancies in Perovskite Oxide Piezoelectrics [PDF]
Materials, 2020 The excellent electro-mechanical properties of perovskite oxide ferroelectrics make these materials major piezoelectrics. Oxygen vacancies are believed to easily form, migrate, and strongly affect ferroelectric behavior and, consequently, the piezoelectric performance of these materials and devices based thereon.
openaire +4 more sources
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
Controlled manipulation of oxygen vacancies using nanoscale flexoelectricity [PDF]
, 2017 Oxygen vacancies, especially their distribution, are directly coupled to the electromagnetic properties of oxides and related emergent functionalities that have implication in device applications.
Cao, Ye +10 more
core +3 more sources
Orienting Oxygen Vacancies for Fast Catalytic Reaction [PDF]
Advanced Materials, 2013 Catalysis is indispensable to chemical processes and relevant to many aspects of modern life. Owing to the intriguing electronic structures and good ionic properties, multivalent transition metal oxides have attracted attention as key catalysts for various energy and environmental applications.
Jeen, Hyoungjeen +6 more
openaire +3 more sources
Mechanisms of Oxygen Vacancy Aggregation in SiO2 and HfO2
Frontiers in Physics, 2019 Dielectric oxide films in electronic devices undergo significant structural changes during device operation under bias. These changes are usually attributed to aggregation of oxygen vacancies resulting in formation of oxygen depleted regions and ...
David Z. Gao +6 more
doaj +1 more source
Materials Research Express, 2020 The strontium titanate (SrTiO _3 ) single crystals with different orientations of (100), (110) and (111) were investigated using thermally stimulated depolarization current (TSDC) measurements, which has been proved to be an effective strategy to ...
Haimo Qu +3 more
doaj +1 more source
Molecules, 2023 Cerium dioxide (CeO2) was pretreated with reduction and reoxidation under different conditions in order to elucidate the role of surface Ce4+ and oxygen vacancies in the catalytic activity for direct synthesis of dimethyl carbonate (DMC) from CO2 and ...
Guoqiang Zhang +6 more
doaj +1 more source
Scientific Reports, 2022 In many complex oxides, the oxygen vacancy formation is a promising route to modify the material properties such as a superconductivity and an oxygen diffusivity.
Sohee Park +3 more
doaj +1 more source
Thermodynamics of mono and di-vacancies in barium titanate [PDF]
, 2012 The thermodynamic and kinetic properties of mono and di-vacancy defects in cubic (para-electric) barium titanate are studied by means of density-functional theory calculations. It is determined which vacancy types prevail for given thermodynamic boundary
Albe, Karsten, Erhart, Paul
core +1 more source