Results 11 to 20 of about 27,441 (264)
Oxygen Vacancy, Oxygen Vacancy–Vacancy Pairs, and Frenkel Defects in Cubic Lutetium Oxide [PDF]
The Journal of Physical Chemistry C, 2020 Electronic and structural properties of cubic Lu2O3 with either single oxygen vacancy, oxygen vacancy-vacancy pair or a Frenkel pair (oxygen vacancy and interstitial oxygen) were analyzed using ab ...
A. Shyichuk, E. Zych
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Electric field-induced oxygen vacancies in YBa2Cu3O7 [PDF]
The Journal of Chemical Physics, 2021 The microscopic doping mechanism behind the superconductor-to-insulator transition of a thin film of YBa2Cu3O7 was recently identified as due to the migration of O atoms from the CuO chains of the film. Here, we employ density-functional theory calculations to study the evolution of the electronic structure of a slab of YBa2Cu3O7 in the presence of ...
A. Lorenzo Mariano, Roberta Poloni
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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.
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Oxygen Vacancies Nucleate Charged Domain Walls in Ferroelectrics [PDF]
Physical Review Letters, 2021 We study the influence of oxygen vacancies on the formation of charged 180$^\circ$ domain walls in ferroelectric BaTiO$_3$ using first principles calculations. We show that it is favorable for vacancies to assemble in crystallographic planes, and that such clustering is accompanied by the formation of a charged domain wall. The domain wall has negative
Petralanda, Urko +3 more
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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
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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
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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
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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
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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
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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
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