scholarly journals Degradation mechanism of a high-performance real micro gas sensor, as determined by spatially resolved XAFS

2016 ◽  
Vol 18 (10) ◽  
pp. 7374-7380
Author(s):  
Takahiro Wada ◽  
Naoyoshi Murata ◽  
Hiromitsu Uehara ◽  
Takuya Suzuki ◽  
Hiroaki Nitani ◽  
...  
Keyword(s):  
Fine Structure ◽  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Degradation Mechanism ◽  
Atomic Scale ◽  
X Ray ◽  
Spatially Resolved ◽  
Micro Gas Sensor ◽  
X Ray Absorption

Of late, battery-driven high-performance gas sensors have gained acceptability in practical usage, whose atomic-scale structure has been revealed by μ-fluorescence X-ray absorption fine structure analysis.

scholarly journals Atomic-scale structure ofGa1−xInxPalloys measured with extended x-ray absorption fine structure spectroscopy

2008 ◽  
Vol 78 (11) ◽  
Author(s):  
C. S. Schnohr ◽  
L. L. Araujo ◽  
P. Kluth ◽  
D. J. Sprouster ◽  
G. J. Foran ◽  
...  
Keyword(s):  
Fine Structure ◽  
Scale Structure ◽  
Atomic Scale ◽  
X Ray ◽  
Absorption Fine ◽  
Atomic Scale Structure ◽  
X Ray Absorption

Synchrotron radiation in situ X-ray absorption fine structure and in situ X-ray diffraction analysis of a high-performance cobalt catalyst towards the oxygen reduction reaction

2017 ◽  
Vol 19 (45) ◽  
pp. 30749-30755
Author(s):  
Haiying Qin ◽  
Longxia Lin ◽  
Junkang Jia ◽  
Huangliang Ni ◽  
Yan He ◽  
...  
Keyword(s):  
Fine Structure ◽  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
High Performance ◽  
Cobalt Catalyst ◽  
Reduction Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption

The evolution of metallic Co to Co(OH)2 and then to CoOOH during the ORR was revealed by in situ XRD combined with in situ XAFS tests.

High-Performance Cathode Based on Microporous Mo–V–Bi Oxide for Li Battery and Investigation by Operando X-ray Absorption Fine Structure

2017 ◽  
Vol 9 (31) ◽  
pp. 26052-26059 ◽  
Author(s):  
Zhenxin Zhang ◽  
Satoshi Ishikawa ◽  
Masaki Kikuchi ◽  
Hirofumi Yoshikawa ◽  
Qi Lian ◽  
...  
Keyword(s):  
Fine Structure ◽  
High Performance ◽  
X Ray ◽  
Absorption Fine ◽  
Li Battery ◽  
X Ray Absorption

scholarly journals Atomic-scale investigation of MgO growth on fused quartz using angle-dependent NEXAFS measurements

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31275-31286 ◽  
Author(s):  
Jitendra Pal Singh ◽  
So Hee Kim ◽  
Sung Ok Won ◽  
Ik-Jae Lee ◽  
Keun Hwa Chae
Keyword(s):  
Fine Structure ◽  
Quartz Substrate ◽  
Atomic Scale ◽  
X Ray ◽  
Absorption Fine ◽  
Fused Quartz ◽  
X Ray Absorption

Near edge X-ray absorption fine structure measurements reveal the formation of MgO on fused quartz substrate.

scholarly journals Anomalous Behavior in the Atomic Structure of Nb3Sn under High Pressure

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 331
Author(s):  
Irene Schiesaro ◽  
Simone Anzellini ◽  
Rita Loria ◽  
Raffaella Torchio ◽  
Tiziana Spina ◽  
...  
Keyword(s):  
Fine Structure ◽  
Atomic Structure ◽  
Anomalous Behavior ◽  
Local Effect ◽  
Atomic Scale ◽  
Crystallographic Structure ◽  
Structural Refinement ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

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. The analysis of the Nb-K edge extended X-ray absorption fine structure (EXAFS) data was carried out combining standard multi shell structural refinement and reverse Monte Carlo method to provide detailed in situ characterization of the pressure-induced evolution of the Nb local structure in Nb3Sn. The results highlight a complex evolution of Nb chains at the local atomic scale, with a peculiar correlated displacement of Nb–Nb and Nb–Nb–Nb configurations. Such a local effect appears related to anomalies evidenced by X-ray diffraction in other superconductors belonging to the same A15 crystallographic structure.

Local structure investigation of Co–Fe–Si–B ribbons by extended X-ray absorption fine-structure spectroscopy

2021 ◽  
Vol 28 (1) ◽  
pp. 240-246
Author(s):  
A. A. Deshmukh ◽  
A. P. Srivastava ◽  
J. P. Singh ◽  
Manish Kumar ◽  
K. H. Chae ◽  
...  
Keyword(s):  
Fine Structure ◽  
Glassy Phase ◽  
Fourier Transforms ◽  
Atomic Radius ◽  
Atomic Scale ◽  
X Ray ◽  
Absorption Fine ◽  
Glassy Alloys ◽  
The Stability ◽  
X Ray Absorption

In the present work, extended X-ray absorption fine-structure (EXAFS) investigations of Co69Fe x Si21–x B10 (x = 3, 5, 7) glassy ribbons were performed at the Co K-edge. The magnitude of the first peak of the Fourier transforms of the EXAFS signals is found to increase monotonically with increasing Si concentrations indicating the formation of the localized ordered structure at the atomic scale. The Co–Si coordination number (CN) increases at the expense of the CN of Co/Fe. Smaller interatomic distances are observed in the glassy phase compared with that in the crystalline phase which promotes the stability of the glassy phase. Calculations of the thermodynamic parameter (P HSS), cohesive energy (E C) and the atomic radius difference (δ) parameter show that the alloy composition Co69Fe3Si18B10 has a good glass-forming ability (GFA) with the highest CN of Si compared with other compositions. A linear correlation of CN with that of the GFA parameter (P HSS) exists and the CN also plays a crucial role in the GFA of the glassy alloys. This parameter should be considered in developing different GFA criteria.

scholarly journals Thermal degradation mechanism of triangular Ag@SiO2nanoparticles

2016 ◽  
Vol 45 (24) ◽  
pp. 9827-9834 ◽  
Author(s):  
Mahesh K. Gangishetty ◽  
Robert W. J. Scott ◽  
Timothy L. Kelly
Keyword(s):  
Fine Structure ◽  
Thermal Degradation ◽  
Degradation Mechanism ◽  
Thermal Degradation Mechanism ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

The thermal degradation mechanism of triangular Ag@SiO2nanoparticles is elucidated through extended X-ray absorption fine structure measurements.

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