Results 1 to 10 of about 20,511 (119)

Oxygen vacancy-induced strengthening and toughening in (K,Na)NbO3-based piezoceramics revealed via nanoindentation [PDF]

Nature Communications
Dislocations are emerging as a pivotal factor for tailoring ceramics’ functional and mechanical properties. The introduction of point defects, notably oxygen vacancies, is unavoidable during the conventional sintering process in polycrystalline ceramics.
Zhidong Zhang, Bin Yang, Longyu Chen, Zaoli Zhang, Jinming Guo   +4 more
doaj   +2 more sources

Sr Doping and Oxygen Vacancy Formation in La_1−xSr_xScO_3−δ Solid Solutions: Computational Modelling

Crystals, 2022
Sr-doped lanthanum scandate La1−xSrxScO3−δ (LSS) is a promising perovskite-type material for electrochemical applications such as proton conductors. Oxygen vacancy is a common defect in ABO3-type perovskites.
Yuri A. Mastrikov, Denis Gryaznov, Guntars Zvejnieks, Maksim N. Sokolov, Māra Putniņa, Eugene A. Kotomin   +5 more
doaj   +1 more source

Oxygen related defects and vacancy clusters identified in sputtering grown UOx thin films by positron annihilation techniques

Results in Physics, 2021
We experimentally studied the formation of vacancy clusters and oxygen related defects in uranium oxide (UOx) thin films (
C. Macchi, A. Somoza, J. Guimpel, S. Suárez, W. Egger, C. Hugenschmidt, S. Mariazzi, R.S. Brusa   +7 more
doaj   +1 more source

First-principles study on non-radiative carrier captures of point defects associated with proton generation in silica

AIP Advances, 2021
The non-radiative carrier captures of point defects associated with proton generation in both crystalline (α-quartz) and amorphous silica (a-SiO2) have been investigated by using first-principles calculations based on the density functional theory. Major
Yunliang Yue, Haoran Zhu, Xiao Liu, Yu Song, Xu Zuo   +4 more
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Oxygen Vacancy Injection on (111) CeO₂ Nanocrystal Facets for Efficient H₂O₂ Detection

Biosensors, 2022
Facet and defect engineering have achieved great success in improving the catalytic performance of CeO2, but the inconsistent reports on the synergistic effect of facet and oxygen vacancy and the lack of investigation on the heavily doped oxygen vacancy ...
Tong Li, Qi Wang, Zhou Wang
doaj   +1 more source

Oxygen vacancy defects engineering on Cu-doped Co3O4 for promoting effective COS hydrolysis

Green Energy & Environment, 2023
The activation of H2O is a key step of the COS hydrolysis, which may be tuned by oxygen vacancy defects in the catalysts. Herein, we have introduced Cu into Co3O4 to regulate the oxygen vacancy defect content of the catalysts.
Guanyu Mu, Yan Zeng, Yong Zheng, Yanning Cao, Fujian Liu, Shijing Liang, Yingying Zhan, Lilong Jiang   +7 more
doaj   +1 more source

A study on the diffusion properties of oxygen in Al and W-doped λ-Ta2O5

AIP Advances, 2021
The formation energy of an oxygen vacancy and the diffusion barrier of an oxygen ion have a significant impact on the operating voltage and other parameters of resistive random access memory.
Xinghui Wu, Nana Cui, Qiuhui Zhang, Wenju Wang, Qixing Xu   +4 more
doaj   +1 more source

Charge-Transfer Induced by the Oxygen Vacancy Defects in the Ag/MoO₃ Composite System

Nanomaterials, 2021
In this paper, an Ag/MoO3 composite system was cosputtered by Ar plasma bombardment on a polystyrene (PS) colloidal microsphere array. The MoO3 formed by this method contained abundant oxygen vacancy defects, which provided a channel for charge transfer ...
Qi Chu, Jingmeng Li, Sila Jin, Shuang Guo, Eungyeong Park, Jiku Wang, Lei Chen, Young Mee Jung   +7 more
doaj   +1 more source

Inhomogeneous Oxygen Vacancy Distribution in Semiconductor Gas Sensors: Formation, Migration and Determination on Gas Sensing Characteristics

Sensors, 2017
The density of oxygen vacancies in semiconductor gas sensors was often assumed to be identical throughout the grain in the numerical discussion of the gas-sensing mechanism of the devices.
Jianqiao Liu, Yinglin Gao, Xu Wu, Guohua Jin, Zhaoxia Zhai, Huan Liu   +5 more
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Oxygen Vacancy Introduction to Increase the Capacity and Voltage Retention in Li‐Excess Cathode Materials

Small Structures, 2023
Li‐rich rocksalt oxides are promising cathode materials for lithium‐ion batteries due to their large capacity and energy density, and their ability to use earth‐abundant elements.
Jianping Huang, Peichen Zhong, Yang Ha, Zhengyan Lun, Yaosen Tian, Mahalingam Balasubramanian, Wanli Yang, Gerbrand Ceder   +7 more
doaj   +1 more source