Results 11 to 20 of about 5,999 (204)

X-Ray Absorption Fine Structure (Xafs) Spectroscopy – A Review [PDF]

, 2013
X-ray absorption spectroscopy (XAS) refers to the details of how X-rays are absorbed by an atom at energies near and above the core-level binding energies of that particular atom. The absorption of X-rays on the high energy side of absorption edges does not vary monotonically in condensed matter but has a complicated behavior which extends past the ...
Abhijeet Gaur, B D Shrivastava, H L Nigam   +2 more
openaire   +3 more sources

Anomalous Behavior in the Atomic Structure of Nb₃Sn under High Pressure

Crystals, 2021
In the present study, the local atomic structure of a Nb3Sn superconductor sample has been probed by X-ray absorption fine structure (XAFS) as a function of hydrostatic pressure (from ambient up to 26 GPa) using a diamond anvil cell set-up.
Irene Schiesaro, Simone Anzellini, Rita Loria, Raffaella Torchio, Tiziana Spina, René Flükiger, Tetsuo Irifune, Enrico Silva, Carlo Meneghini   +8 more
doaj   +1 more source

Influence of polyethylene glycol on the physical properties of Co0.2Fe2.8O4 nanoparticles used as MRI contrast agent; synchrotron radiation Fe K-edge XAFS

Journal of Materials Research and Technology, 2021
We have synthesized and characterized the surface-modified nanoparticles (NPs) of Co0.2Fe2.8O4/x polyethylene glycol (PEG) (x = 0, 10, 20, 30, and 40%).
N.G. Imam, Mennatallah AbouHasswa, Giuliana Aquilanti, S.I. El Dek, N. Okasha, Ahmed A.G. Al Shahawy   +5 more
doaj   +1 more source

XAFS Analysis of Sulfuric Acid Solution Related to the Effect of Bi in Suppressing the Disproportionation Reaction of Mn3+ in Mn/Ti Redox Flow Cells

Electrochemistry, 2023
In sulfuric acid (H2SO4) aqueous solutions containing manganese (Mn) and titanium (Ti) ions, which are used for the positive electrolyte in redox flow (RF) batteries, the addition of a small quantity of bismuth (Bi) has been found to be very effective in
Junji IIHARA, Kazuya TOKUDA, Yoshihiro SAITO   +2 more
doaj   +1 more source

Generating Mechanism of Catalytic Effect for Hydrogen Absorption/Desorption Reactions in NaAlH₄–TiCl₃

Applied Sciences, 2021
The hydrogen desorption and absorption reactions of the complex metal hydride NaAlH4 are disproportionation processes, and the kinetics can be improved by adding a few mol% of Ti compounds, although the catalytic mechanism, including the location and ...
Kazutaka Ikeda, Fumika Fujisaki, Toshiya Otomo, Hidetoshi Ohshita, Takashi Honda, Toru Kawamata, Hiroshi Arima, Kazumasa Sugiyama, Hitoshi Abe, Hyunjeong Kim, Kouji Sakaki, Yumiko Nakamura, Akihiko Machida, Toyoto Sato, Shigeyuki Takagi, Shin-ichi Orimo   +15 more
doaj   +1 more source

Data science assisted investigation of catalytically active copper hydrate in zeolites for direct oxidation of methane to methanol using H2O2

Scientific Reports, 2021
Dozens of Cu zeolites with MOR, FAU, BEA, FER, CHA and MFI frameworks are tested for direct oxidation of CH4 to CH3OH using H2O2 as oxidant. To investigate the active structures of the Cu zeolites, 15 structural variables, which describe the features of ...
Junya Ohyama, Airi Hirayama, Nahoko Kondou, Hiroshi Yoshida, Masato Machida, Shun Nishimura, Kenji Hirai, Itsuki Miyazato, Keisuke Takahashi   +8 more
doaj   +1 more source

XAFS spectrum of Tungsten [PDF]

, 2021
This dataset consists of X-ray absorption fine structure (XAFS) spectra at W K-edge of Tungsten measured at SPring-8 BL14B2, and is a part of XAFS database (MDR XAFS DB, https://doi.org/10.48505/nims.1447) as a collection of ...
Industrial Application and Partnership Division
core   +1 more source

Upgrade of transmission XAFS data acquisition system upgrade of Shanghai Synchrotron Radiation Facility BL14W1 beamline station

He jishu, 2022
BackgroundX-ray absorption spectroscopy (XAS) has a wide range of applications in materials science, biology, chemistry and other fields.PurposeThis study aims to improve the efficiency of transmission acquisition of synchrotron X-ray absorption fine ...
LIU Hongzhou, LI Ji, GU Songqi, SU Xiaozhi, MEI Bingbao, JIANG Zheng, LIU Zhi   +6 more
doaj   +1 more source

Integration of X-ray absorption fine structure databases for data-driven materials science

Science and Technology of Advanced Materials: Methods, 2023
With the aim of introducing data-driven science and establishing an infrastructure for making X-ray absorption fine structure (XAFS) spectra findable and reusable, we have integrated XAFS databases in Japan. This integrated database (MDR XAFS DB) enables
Masashi Ishii, Kosuke Tanabe, Asahiko Matsuda, Hironori Ofuchi, Takahiro Matsumoto, Toyonari Yaji, Yasuhiro Inada, Hiroaki Nitani, Masao Kimura, Kiyotaka Asakura   +9 more
doaj   +1 more source

Application of x-ray absorption fine structure (XAFS) to local-order analysis in Fe-Cr maghemite-like materials [PDF]

, 2015
The maghemite-like oxide system γ-Fe2-xCrxO3 (x=0.75, 1 and 1.25) was studied by X-ray absorption fine structure (XAFS) and by synchrotron radiation X-ray diffraction (XRD). Measurements were performed at the Stanford Synchrotron Radiation Lightsource at
MARIA ELENA MONTERO CABRERA, LUIS EDMUNDO FUENTES COBAS, MARIA ELENA FUENTES MONTERO   +2 more
core   +1 more source