scholarly journals An X-Ray Emission Spectroscopic Investigation of the Chemical Bond of Sulfur. I. The Peak Shift ofKα and the Number of Valence Electrons of the Sulfur Atom in Compounds

1967 ◽  
Vol 40 (2) ◽  
pp. 298-301 ◽  
Author(s):  
Toshio Sato ◽  
Yoshihito Takahashi ◽  
Katsumasa Yabe
Keyword(s):  
Chemical Bond ◽  
Sulfur Atom ◽  
Spectroscopic Investigation ◽  
Peak Shift ◽  
X Ray ◽  
Valence Electrons

X-Ray Spectroscopic Investigation of the Electronic Structure and Chemical Bond of the Semiconductors Sn2P2S6 and Tl3PS4

1985 ◽  
Vol 131 (2) ◽  
pp. K139-K143 ◽  
Author(s):  
A. N. Gusatinskii ◽  
A. A. Lavrentev ◽  
M. A. Blokhin ◽  
V. Yu. Slivka
Keyword(s):  
Electronic Structure ◽  
Chemical Bond ◽  
Spectroscopic Investigation ◽  
X Ray

Synchrotron X-Ray Topography Study on the Relationship between Local Basal Plane Bending and Basal Plane Dislocations in PVT-Grown 4H-SiC Substrate Wafers

2020 ◽  
Vol 1004 ◽  
pp. 393-400
Author(s):  
Tuerxun Ailihumaer ◽  
Hongyu Peng ◽  
Balaji Raghothamachar ◽  
Michael Dudley ◽  
Gilyong Chung ◽  
...  
Keyword(s):  
Basal Plane ◽  
Local Strain ◽  
Grazing Incidence ◽  
Peak Shift ◽  
Linear Mapping ◽  
Incidence Geometry ◽  
Convex Shape ◽  
X Ray ◽  
Black And White ◽  
Plane Bending

Synchrotron monochromatic beam X-ray topography (SMBXT) in grazing incidence geometry shows black and white contrast for basal plane dislocations (BPDs) with Burgers vectors of opposite signs as demonstrated using ray tracing simulations. The inhomogeneous distribution of these dislocations is associated with the concave/convex shape of the basal plane. Therefore, the distribution of these two BPD types were examined for several 6-inch diameter 4H-SiC substrates and the net BPD density distribution was used for evaluating the nature and magnitude of basal plane bending in these wafers. Results show different bending behaviors along the two radial directions - [110] and [100] directions, indicating the existence of non-isotropic bending. Linear mapping of the peak shift of the 0008 reflection along the two directions was carried out using HRXRD to correlate with the results from the SMBXT measurements. Basal-plane-tilt angle calculated using the net BPD density derived from SMBXT shows a good correlation with those obtained from HRXRD measurements, which further confirmed that bending in basal plane is caused by the non-uniform distribution of BPDs. Regions of severe bending were found to be associated with both large tilt angles (95% black contrast BPDs to 5% white contrast BPDs) and abrupt changes in a and c lattice parameters i.e. local strain.

scholarly journals Towards a unified understanding of the copper sites in particulate methane monooxygenase: An X-ray absorption spectroscopic investigation

2021 ◽  
Author(s):  
George Cutsail III ◽  
Matthew O Ross ◽  
Amy C Rosenzweig ◽  
Serena DeBeer
Keyword(s):  
Greenhouse Gas ◽  
Spectroscopic Investigation ◽  
Liquid Fuel ◽  
Methane Monooxygenase ◽  
Enzymatic Conversion ◽  
Particulate Methane Monooxygenase ◽  
X Ray ◽  
Mild Conditions ◽  
Copper Sites ◽  
X Ray Absorption

The enzymatic conversion of the greenhouse gas, methane, to a liquid fuel, methanol, is performed by methane monooxygenases (MMOs) under mild conditions. The copper stoichiometry of particulate MMO (pMMO) has...

Stacking Faults in a High Nitrogen Face-Centered-Cubic Phase Formed on Nitrogen-Modified Austenitic Stainless Steel

2008 ◽  
Vol 373-374 ◽  
pp. 318-321
Author(s):  
J. Liang ◽  
M.K. Lei
Keyword(s):  
Stainless Steel ◽  
Plasma Source ◽  
Peak Shift ◽  
Cubic Phase ◽  
Face Centered Cubic ◽  
X Ray Diffraction ◽  
High Nitrogen ◽  
X Ray ◽  
Peak Asymmetry ◽  
Face Centered

Effects of stacking faults in a high nitrogen face-centered-cubic phase (γΝ) formed on plasma source ion nitrided 1Cr18Ni9Ti (18-8 type) austenitic stainless steel on peak shift and peak asymmetry of x-ray diffraction were investigated based on Warren’s theory and Wagner’s method, respectively. The peak shift from peak position of the γΝ phase is ascribed to the deformation faults density α, while the peak asymmetry of the γΝ phase is characterized by deviation of the center of gravity of a peak from the peak maximum (Δ C.G.) due to the twin faults density β. The calculated peak positions of x-ray diffraction patterns are consistent with that measured for plasma source ion nitrided 1Cr18Ni9Ti stainless steel.

The chemical bond and atomic displacements in SrTiO3 from X-ray diffraction analysis

1995 ◽  
Vol 51 (6) ◽  
pp. 942-951 ◽  
Author(s):  
Yu. A. Abramov ◽  
V. G. Tsirelson ◽  
V. E. Zavodnik ◽  
S. A. Ivanov ◽  
Brown I. D.
Keyword(s):  
Diffraction Analysis ◽  
Chemical Bond ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Displacements
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