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Oxygen-Vacancy Dynamics and Entanglement with Polaron Hopping at the Reduced CeO2 (111) Surface
(American Physical Society, 2019-03)
The migration of oxygen vacancies (VO) in ceria-based systems is crucial to their functionality in applications. Yet, although the VO's structure and the distribution of the Ce3+ polarons at the CeO2(111) surface has ...
Oxygen vacancies effect on phase separation in Pr0.5Ca0.2Sr0.3MnO3-δ
(American Institute of Physics, 2003-05)
We study the effect of the introduction of a controlled amount of oxygen vacancies on the magnetic and transport properties of the phase separated manganite Pr0.5Ca0.2Sr0.3MnO3−δ, for δ=0 and 0.01. This compound presents ...
Impact of oxygen atmosphere on piezoelectric properties of CaBi2Nb2O9 thin films
(Elsevier B.V., 2007-08-01)
CaBi2Nb2O9 (CBNO) thin films were deposited on platinum-coated silicon substrates by the polymeric precursor method, and were annealed in air and in an oxygen atmosphere. The structure, surface morphology and electrical ...
Impact of oxygen atmosphere on piezoelectric properties of CaBi2Nb2O9 thin films
(Elsevier B.V., 2007-08-01)
CaBi2Nb2O9 (CBNO) thin films were deposited on platinum-coated silicon substrates by the polymeric precursor method, and were annealed in air and in an oxygen atmosphere. The structure, surface morphology and electrical ...
DFT Study on Ce-Doped Anatase TiO2: Nature of Ce3+ and Ti3+ Centers Triggered by Oxygen Vacancy Formation
(Amer Chemical Soc, 2014-05-08)
A systematic study of TiO2 anatase, Ce-doped TiO2 anatase with 2.8 and 5.6% dopant concentration and of the systems resulting from oxygen vacancy formation has been carried out by means of periodic density functional theory ...
Dual oxygen defects in layered La1.2Sr0.8-xBaxInO4+δ (x = 0.2, 0.3) oxide-Ion conductors: A neutron diffraction study
(Molecular Diversity Preservation International, 2019-05)
The title compounds exhibit a K2NiF4-type layered perovskite structure; they are based on the La1.2Sr0.8InO4+δ oxide, which was found to exhibit excellent features as fast oxide-ion conductor via an interstitial oxygen ...
Investigation on the role of oxygen vacancies in the Cd hyperfine properties in (Co, Mn)-doped CeO2
(Tata Institute of Fundamental Research, 2020)
The role of oxygen vacancy in the photoluminescence property at room temperature of the CaTiO(3)
(AMER INST PHYSICS, 2009)
In this paper, electron paramagnetic resonance, photoluminescence (PL) emission, and quantum mechanical calculations were used to observe and understand the structural order-disorder of CaTiO(3), paying special attention ...
Understanding the Role of Oxygen Vacancies in the Water Gas Shift Reaction on Ceria-Supported Platinum Catalysts
(ACS Publications, 2014-06)
Reducible oxides have been shown to greatly improve the activity of water gas shift (WGS) catalysts. The precise mechanism for this effect is a matter of intense debate, but the dissociation of water is generally considered ...