Global ETD Search
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Showing 1 to 7 of 7 for “"oxygen interstitial"”.
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Oxygen self-diffusion via a mobile intermediate species in rutile titania
… titania allows for facile injection of a mobile oxygen intermediate other than the doubly-charged oxygen vacancy. Characteristic exponential tail profiles coupled with the observation of a positive oxygen partial pressure dependence on isotopic oxygen diffusion in rutile suggests that the …
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Syntheses, Characterizations, and Properties of Suboxides and Layered Titanium-based Pnictide Oxide Superconductors
We investigated the effects of oxygen interstitial in the phase Ce3Si2Ox. The binary Ce3Si2 was found to exhibit antiferromagnetic behavior, with the Neel temperature of TN = 8 K. The oxygen interstitial phase, Ce3Si2O0.82 was found to be paramagnetic. This indicates that the introduction of oxygen …
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A first principles study of defects in titanium: interaction of twin boundaries with dislocations and oxygen interstitials
… of hcp metals such as titanium. In addition, oxygen greatly affects both strength and twinning in titanium. Predictive models of strength and twinning rely on understanding of the underlying atomic scale mechanisms which are best captured through computer simulations. While recent …
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Controlling properties of functional oxides by tuning oxygen defect chemistry
Oxygen defects are essential building blocks for properties and functionalities of oxides, including electrical conductivity, magnetism, ferroelectricity as well as catalytic and electrocatalytic activity. Therefore, fundamental understanding of how to tune the oxygen defect chemistry is essential …
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Surface chemistry to control bulk reaction dynamics of native point defects in rutile titanium dioxide
… diffusion of cations and anions, in the form of interstitials and vacancies, plays a large role in the performance of these materials for gas sensing, photocatalysis, microelectronics and photovoltaic cells. The ability to control the properties of semiconductors through defect manipulation, or …
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Surface-mediated mechanisms for defect engineering in zinc oxide
… zinc oxide, the concentration and diffusion of oxygen point defects, like interstitials and vacancies, play a central role in various physical phenomena, such as gas sensing, bipolar switching, photoluminescence and photocatalysis. Defect engineering in metal oxides aims at manipulating material …
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Surface-mediated mechanisms for defect engineering in metal oxides
… of solid point defects such as vacancies and interstitial atoms influence the performance of metal oxides in gas sensing, electronics, photonics and solar-induced photochemistry for fuel production and environmental cleanup. Controlling these aspects of defect behavior has become increasingly …