Results 11 to 20 of about 29,284 (264)

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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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, Bi, Zhonghe, Choi, Woo Seok, Chisholm, Matthew F., Bridges, Craig A., Paranthaman, M. Parans, Lee, Ho Nyung   +6 more
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Mechanisms of Oxygen Vacancy Aggregation in SiO2 and HfO2

Frontiers in Physics, 2019
Dielectric oxide films in electronic devices undergo significant structural changes during device operation under bias. These changes are usually attributed to aggregation of oxygen vacancies resulting in formation of oxygen depleted regions and ...
David Z. Gao, David Z. Gao, David Z. Gao, Jack Strand, Manveer S. Munde, Manveer S. Munde, Alexander L. Shluger   +6 more
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Thermally stimulated relaxation and behaviors of oxygen vacancies in SrTiO3 single crystals with (100), (110) and (111) orientations

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, Bingcheng Luo, Shuaishuai Bian, Zhenxing Yue   +3 more
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Elucidating the Role of Surface Ce⁴⁺ and Oxygen Vacancies of CeO₂ in the Direct Synthesis of Dimethyl Carbonate from CO₂ and Methanol

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, Yuan Zhou, Yanlin Yang, Tiantian Kong, Ya Song, Song Zhang, Huayan Zheng   +6 more
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Argon and Oxygen Gas Flow Rate Dependency of Sputtering-Based Indium-Gallium-Zinc Oxide Thin-Film Transistors

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, Dong Hyun Lee, Eou-Sik Cho, Sang Jik Kwon, Hocheon Yoo   +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, Juan Shen, Roser Valentí   +2 more
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Two Dimensional Oxygen-deficient Bismuth oxy-iodide Nanosheets with Enhanced Supercapacitor Performances

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, Zhengde Wang, Huadong Tian, Rongrong Cheng, Mohan Lin, Xueqin Sun, Songlin Ran, Yaohui Lv   +7 more
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Role of Sr doping and external strain on relieving bottleneck of oxygen diffusion in La2−x Sr x CuO4−δ

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, Young-Kyun Kwon, Mina Yoon, Changwon Park   +3 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, O. Pacherova, T. Kocourek, A. Dejneka   +3 more
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