Results 21 to 30 of about 29,896 (261)

Mechanisms of antimony ageing in soils: An XAS study

, 2021
Antimony (Sb) retention in soils increases in the long term, resulting in lower soluble Sb concentrations and thus a decreased environmental risk of Sb. However, the mechanisms responsible for Sb ageing in soils are not clear, although this is necessary ...
Gustafsson, J. P., Claudia Moens, Jon Petter Gustafsson, Mieke Verbeeck, Moens, C., Verbeeck, M.   +5 more
core   +1 more source

Autonomous atomic Hamiltonian construction and active sampling of X-ray absorption spectroscopy by adversarial Bayesian optimization

npj Computational Materials, 2023
X-ray absorption spectroscopy (XAS) is a well-established method for in-depth characterization of electronic structure. In practice hundreds of energy-points should be sampled during the measurements, and most of them are redundant.
Yixuan Zhang, Ruiwen Xie, Teng Long, Damian Günzing, Heiko Wende, Katharina J. Ollefs, Hongbin Zhang   +6 more
doaj   +1 more source

Effect of InxAl1-xAs graded buffer materials on pseudomorphic InP HEMT

Frontiers in Materials, 2022
In this paper, The InxAl1-xAs graded buffer was inserted between the InAlAs buffer layer and the pseudomorphic In0.66Ga0.34As channel layer to improve material quality in channel.
Likun Ai, Fangkun Tian, Fangkun Tian, Anhuai Xu, Hua Huang, Ming Qi   +5 more
doaj   +1 more source

Emergent 3D Fermiology and Magnetism in an Intercalated Van der Waals System. [PDF]

Adv Sci (Weinh)
An emergent three‐dimensional electronic state is uncovered in an intercalated van der Waals system. A spin‐polarized intercalant‐host hybridized band crossing the Fermi level provides an itinerant channel for interlayer exchange, highlighting how electronic dispersion governs magnetic dimensionality.
Camerano L, Martínez EA, Porée V, Martella L, Mastrippolito D, Pierucci D, D'Orazio F, Sheverdyaeva PM, Moras P, Della Valle E, Yu T, Hoesch M, Polley CM, Balasubramanian T, Nicolaou A, Ottaviano L, Strocov VN, Profeta G, Bisti F.   +18 more
europepmc   +2 more sources

SIMULATION OF SOLAR CELLS BASED ON HETEROSTRUCTURES AlxGa1-xAs - InxGa1-xAs - GaAs

Вестник Северо-Кавказского федерального университета, 2022
The program Silvaco TCAD simulated electrical parameters of solar cells based on AlxGa1-xAs - InxGa1-xAs - GaAs under AM 1.5 for different values of x.
Oleg V. Devitsky, Igor A. Sysoev
doaj  

A dedicated beamline for wide-energy-range X-ray spectroscopy at SSRF: combining soft and hard X-ray capabilities

Journal of Synchrotron Radiation
The advancement of renewable energy critically depends on the rational design of catalysts, which necessitates a thorough understanding of the underlying materials.
Zhaofeng Liang, Jinyang Xu, Lei Xie, Jingyuan Ma, Bingbao Mei, Liangxin Wang, Nan Wang, Zhenhua Chen, Ying Zou, Fei Song   +9 more
doaj   +1 more source

Web-CONEXS: an inroad to theoretical X-ray absorption spectroscopy

Journal of Synchrotron Radiation
Accurate analysis of the rich information contained within X-ray spectra usually calls for detailed electronic structure theory simulations. However, density functional theory (DFT), time-dependent DFT and many-body perturbation theory calculations ...
Joshua D. Elliott, Victor Rogalev, Nigel Wilson, Mihai Duta, Christopher J. Reynolds, Jacob Filik, Thomas J. Penfold, Sofia Diaz-Moreno   +7 more
doaj   +1 more source

Simulated sulfur K-edge X-ray absorption spectroscopy database of lithium thiophosphate solid electrolytes

Scientific Data, 2023
X-ray absorption spectroscopy (XAS) is a premier technique for materials characterization, providing key information about the local chemical environment of the absorber atom.
Haoyue Guo, Matthew R. Carbone, Chuntian Cao, Jianzhou Qu, Yonghua Du, Seong-Min Bak, Conan Weiland, Feng Wang, Shinjae Yoo, Nongnuch Artrith, Alexander Urban, Deyu Lu   +11 more
doaj   +1 more source

THE PROSPECT OF GETTING SOLAR CELLS BASED ON GRADED-GAP HETEROSTRUCTURES Al_xGa_1-xAs - In_xGa_1-xAs

Вестник Северо-Кавказского федерального университета, 2022
The paper calculated the structures 2-junction solar cells based on heterostructures of graded-gap AlxGa1-xAs - InxGa1-xAs. It is shown that the efficiency of 2-junction graded-gap solar cells based on heterostructures AlxGa1-xAs - InxGa1-xAs can reach ...
Oleg Devitsky, Igor Sysoev, Ivan Kasyanov   +2 more
doaj  

F K-edge XAS as a tool to examine F environments in complex inorganic systems

Journal of Synchrotron Radiation
As part of an effort to establish the principles and application of F K-edge X-ray absorption spectra to complex inorganic systems, the F K-edge spectra of a range of glasses, minerals and synthetic crystalline compounds are presented and discussed in ...
Malin C. Dixon Wilkins, John M. Bussey, John S. McCloy   +2 more
doaj   +1 more source