Results 11 to 20 of about 112,711 (289)
Electronic properties of buried hetero-interfaces of LaAlO3 on SrTiO3 [PDF]
Physical review B: Condensed matter and materials physics, 2007 We have made very thin films of LaAlO3 on TiO2 terminated SrTiO3 and have measured the properties of the resulting interface in various ways. Transport measurements show a maximum sheet carrier density of 1016 cm-2 and a mobility around 104 cm2 V-1 s-1 ...
Dave H. A. Blank +7 more
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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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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
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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
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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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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
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