Results 21 to 30 of about 27,441 (264)

Impact of dielectric properties on ionic conductivity of Ce0.9Sm0.1O1.95 via defect interaction

Materials Letters: X, 2021
This study mainly investigates the defect interaction mediated ionic conductivity of Ce0.9Sm0.1O1.95. The ionic conductivity mainly depends on the concentration of free oxygen vacancies.
Sk. Anirban, Abhigyan Dutta
doaj   +1 more source

Pressure Destabilizes Oxygen Vacancies in Bridgmanite [PDF]

Journal of Geophysical Research: Solid Earth, 2021
AbstractBridgmanite may contain a large proportion of ferric iron in its crystal structure in the forms of FeFeO3and MgFeO2.5components. We investigated the pressure dependence of FeFeO3and MgFeO2.5contents in bridgmanite coexisting with MgFe2O4‐phase and with or without ferropericlase in the MgO‐SiO2‐Fe2O3ternary system at 2,300 K, 33 and 40 GPa ...
Fei, Hongzhan, Liu, Zhaodong, Huang, Rong, Kamada, Seiji, Hirao, Naohisa, Kawaguchi, Saori, McCammon, Catherine, Katsura, Tomoo   +7 more
openaire   +2 more sources

Controlled manipulation of oxygen vacancies using nanoscale flexoelectricity [PDF]

Nature Communications, 2017
AbstractOxygen vacancies, especially their distribution, are directly coupled to the electromagnetic properties of oxides and related emergent functionalities that have implications for device applications. Here using a homoepitaxial strontium titanate thin film, we demonstrate a controlled manipulation of the oxygen vacancy distribution using the ...
Saikat Das, Bo Wang, Ye Cao, Myung Rae Cho, Yeong Jae Shin, Sang Mo Yang, Lingfei Wang, Minu Kim, Sergei V. Kalinin, Long-Qing Chen, Tae Won Noh   +10 more
openaire   +5 more sources

Vacancies and vacancy-oxygen complexes in silicon: Positron annihilation with core electrons [PDF]

Physical Review B, 1998
Various point defects in silicon are studied theoretically from the point view of positron annihilation spectroscopy. Properties of a positron trapped at a single vacancy, divacancy, vacancy-oxygen complexes $({\mathrm{VO}}_{n}),$ and divacancy-oxygen complex are investigated. In addition to the positron lifetime and positron binding energy to defects,
Kuriplach, Jan, Morales Aramburo, Álvaro Luis, Dauwe, Charles, Segers, Danny, Sob, M.   +4 more
openaire   +3 more sources

Oxygen-vacancy-related relaxation and conduction behavior in (Pb1-xBax)(Zr0.95Ti0.05)O3 ceramics

AIP Advances, 2014
(Pb1-xBax)(Zr0.95Ti0.05)O3 (x = 0, 0.025, 0.05, 0.075 and 0.1) ceramics were prepared via a solid-state reaction route. Low-frequency (20 ∼ 2 × 107 Hz) dielectric properties were investigated in the temperature region of 25-650 °C.
Tian-Fu Zhang, Xin-Gui Tang, Qiu-Xiang Liu, Sheng-Guo Lu, Yan-Ping Jiang, Xian-Xiong Huang, Qi-Fa Zhou   +6 more
doaj   +1 more source

In Situ Analysis of Oxygen Vacancies and Band Alignment in HfO2/TiN Structure for CMOS Applications

Nanoscale Research Letters, 2017
The density of oxygen vacancies characterization in high-k/metal gate is significant for semiconductor device fabrication. In this work, a new approach was demonstrated to detect the density of oxygen vacancies by in situ x-ray photoelectron spectroscopy
Da-Peng Xu, Lin-Jie Yu, Xu-Dong Chen, Lin Chen, Qing-Qing Sun, Hao Zhu, Hong-Liang Lu, Peng Zhou, Shi-Jin Ding, David Wei Zhang   +9 more
doaj   +1 more source

Synthesis of Surface Oxygen-deficient BiPO4 Nanocubes with Enhanced Visible Light Induced Photocatalytic Activity [PDF]

Materials Research, 2017
The visible light driven BiPO4 nanocubes with sufficient surface oxygen deficiency were fabricated by a hydrothermal process and subsequently ultrasonic assistant Fe reduction process.
Bingtao Shi, Haoyong Yin, Tao Li, Jianying Gong, Shumei Lv, Qiulin Nie   +5 more
doaj   +1 more source

Molten-salt defect engineering of TiO2(B) nanobelts for enhanced photocatalytic hydrogen evolution

JCIS Open, 2021
Defect engineering has been proved to be an effective strategy to adjust the electronic structures and photocatalytic activities of semiconductor oxides. However, due to lack of convenient approach to construct defect, the effect of oxygen vacancy defect
Daijun Xie, Yingjie Wang, Han Yu, Xinran Yang, Shining Geng, Xiangfu Meng   +5 more
doaj   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Enhancing the performance of Bi2O3–ZnO semiconductor bilayers for photoelectrochemical electrodes by strategically engineering oxygen vacancies

Journal of Science: Advanced Materials and Devices
This study successfully synthesized sheet-like triangular Bi2O3 using the hydrothermal method and subsequently annealed it in a hydrogen-contained atmosphere to effectively introduce oxygen vacancies.
Yuan-Chang Liang, Po-Hsiang Wang
doaj   +1 more source