Alloying effects on x-ray absorption edges in nickel-platinum single crystals

1993 ◽  
Vol 97 (17) ◽  
pp. 4288-4292 ◽  
Author(s):  
B. Moraweck ◽  
A. J. Renouprez ◽  
E. K. Hlil ◽  
R. Baudoing-Savois
Keyword(s):  
Single Crystals ◽  
X Ray ◽  
Alloying Effects ◽  
Nickel Platinum ◽  
X Ray Absorption ◽  
Platinum Single Crystals ◽  
Absorption Edges

scholarly journals Al-driven peculiarities of local coordination and magnetic properties in single-phase Alx-CrFeCoNi high-entropy alloys

Nano Research ◽  
2021 ◽  
Author(s):  
Alevtina Smekhova ◽  
Alexei Kuzmin ◽  
Konrad Siemensmeyer ◽  
Chen Luo ◽  
Kai Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Magnetic Circular Dichroism ◽  
Surface Region ◽  
Face Centered Cubic ◽  
X Rays ◽  
X Ray ◽  
High Entropy ◽  
X Ray Absorption ◽  
Absorption Edges

AbstractModern design of superior multi-functional alloys composed of several principal components requires in-depth studies of their local structure for developing desired macroscopic properties. Herein, peculiarities of atomic arrangements on the local scale and electronic states of constituent elements in the single-phase face-centered cubic (fcc)- and body-centered cubic (bcc)-structured high-entropy Alx-CrFeCoNi alloys (x = 0.3 and 3, respectively) are explored by element-specific X-ray absorption spectroscopy in hard and soft X-ray energy ranges. Simulations based on the reverse Monte Carlo approach allow to perform a simultaneous fit of extended X-ray absorption fine structure spectra recorded at K absorption edges of each 3d constituent and to reconstruct the local environment within the first coordination shells of absorbers with high precision. The revealed unimodal and bimodal distributions of all five elements are in agreement with structure-dependent magnetic properties of studied alloys probed by magnetometry. A degree of surface atoms oxidation uncovered by soft X-rays suggests different kinetics of oxide formation for each type of constituents and has to be taken into account. X-ray magnetic circular dichroism technique employed at L2.3 absorption edges of transition metals demonstrates reduced magnetic moments of 3d metal constituents in the sub-surface region of in situ cleaned fcc-structured Al0.3-CrFeCoNi compared to their bulk values. Extended to nanostructured versions of multicomponent alloys, such studies would bring new insights related to effects of high entropy mixing on low dimensions.

X-RAY ABSORPTION EDGES OF TRANSITION- METAL-DOPED Y1Ba2Cu3−xMxO7−∂

1988 ◽  
Vol 02 (05) ◽  
pp. 1153-1156 ◽  
Author(s):  
J. B. BOYCE ◽  
F. BRIDGES ◽  
T. CLAESON ◽  
T. H. GEBALLE ◽  
M. NYGREN ◽  
...  
Keyword(s):  
Transition Metal ◽  
X Ray ◽  
Metal Doped ◽  
X Ray Absorption ◽  
Absorption Edges

scholarly journals Anisotropy of X-ray Absorption Cross Section in CeCoGe3 Single Crystal

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 544
Author(s):  
Andrei Rogalev ◽  
Fabrice Wilhelm ◽  
Elena Ovchinnikova ◽  
Aydar Enikeev ◽  
Roman Bakonin ◽  
...  
Keyword(s):  
Cross Section ◽  
Absorption Cross Section ◽  
Linear Dichroism ◽  
X Rays ◽  
Absorption Cross ◽  
X Ray ◽  
Measured Absorption ◽  
Linearly Polarized ◽  
X Ray Absorption ◽  
Absorption Edges

Absorption spectra of two orthogonal linearly polarized x-rays in a single CeCoGe3 crystal were measured at the ID12 beamline of the ESRF for the energies near the K-edges of Ge, Co and near the L23 edges of Ce. The X-ray natural linear dichroism (XNLD) was revealed in the vicinity of all the absorption edges, which indicates a splitting of electronic states in a crystalline field. Mathematical modelling in comparison with experimental data allowed the isotropic and anisotropic parts of atomic absorption cross section in CeCoGe3 to be determined near all measured absorption edges. The calculations also show that the “average” anisotropy of the cross section close to the Ge K-edge revealed in the experiment is less than the partial anisotropic contributions corresponding to Ge atoms in two different Wyckoff positions.

X-ray magnetic circular dichroism study of SmAl2 using the M4,5 x-ray absorption edges

2003 ◽  
Vol 93 (10) ◽  
pp. 8337-8339 ◽  
Author(s):  
S. S. Dhesi ◽  
P. Bencok ◽  
N. B. Brookes ◽  
G. van der Laan ◽  
R. M. Galéra
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
X Ray Absorption ◽  
Circular Dichroïsm ◽  
Absorption Edges

scholarly journals X-ray absorption linear dichroism at the Ti K edge of anatase TiO2 single crystals

2019 ◽  
Vol 100 (24) ◽  
Author(s):  
T. C. Rossi ◽  
D. Grolimund ◽  
M. Nachtegaal ◽  
O. Cannelli ◽  
G. F. Mancini ◽  
...  
Keyword(s):  
Single Crystals ◽  
Linear Dichroism ◽  
Anatase Tio2 ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Hard X-ray magnetochiral dichroism in a paramagnetic molecular 4f complex

2020 ◽  
Vol 11 (31) ◽  
pp. 8306-8311
Author(s):  
Dmitri Mitcov ◽  
Mikhail Platunov ◽  
Christian D. Buch ◽  
Anders Reinholdt ◽  
Anders R. Døssing ◽  
...  
Keyword(s):  
Single Crystals ◽  
Opposite Sign ◽  
X Ray ◽  
First Time ◽  
X Ray Absorption ◽  
Absorption Measurements

Magnetochiral Dichroism of chiral mononuclear lanthanoid complexes is for the first time detected by X-ray absorption measurements on single crystals of Holmium oxydiacetate, at the Ho L3-edge. The effect is of opposite sign for the two enantiomers.

A comparative study of the x-ray absorption edges of gaseous, liquid and solid GeCl4

Physica ◽  
1939 ◽  
Vol 6 (7-12) ◽  
pp. 929-940 ◽  
Author(s):  
T. Dryn´ski ◽  
R. Smoluchowski
Keyword(s):  
Comparative Study ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges

Separating overlapping x-ray-absorption edges using diffraction anomalous fine-structure

1999 ◽  
Vol 12 (3) ◽  
pp. 30-33
Author(s):  
B. Ravel ◽  
C. E. Bouldin ◽  
H. Renevier
Keyword(s):  
Fine Structure ◽  
X Ray ◽  
X Ray Absorption ◽  
Absorption Edges
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