Spin waves in metallic iron and nickel measured by soft x-ray resonant inelastic scattering

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
N. B. Brookes ◽  
D. Betto ◽  
K. Cao ◽  
Yi Lu ◽  
K. Kummer ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Metallic Iron ◽  
Spin Waves ◽  
X Ray

X-ray inelastic scattering from small particles of graphite

1981 ◽  
Vol 85 (2) ◽  
pp. 115-117
Author(s):  
G.D. Priftis ◽  
J. Boviatsis
Keyword(s):  
Inelastic Scattering ◽  
Small Particles ◽  
X Ray

A band-structure-based approach to modeling x-ray absorption, fluorescence, and resonant inelastic scattering

2000 ◽  
Author(s):  
Eric L. Shirley ◽  
J. A. Carlisle ◽  
S. R. Blankenship ◽  
R. N. Smith ◽  
L. J. Terminello ◽  
...  
Keyword(s):  
Band Structure ◽  
Inelastic Scattering ◽  
X Ray ◽  
X Ray Absorption

scholarly journals From atoms to electrodes: Mesoscale effects in electrochemical conversion

2014 ◽  
Vol 70 (a1) ◽  
pp. C1173-C1173
Author(s):  
Kamila Wiaderek ◽  
Olaf Borkiewicz ◽  
Nathalie Pereira ◽  
Jan Ilavsky ◽  
Glenn Amatucci ◽  
...  
Keyword(s):  
Metallic Iron ◽  
Composite Electrodes ◽  
Iron Compounds ◽  
X Ray ◽  
Electrochemical Conversion ◽  
X Ray Scattering ◽  
Multiple Length Scales ◽  
Nanoscale Structure ◽  
And Performance ◽  
Identical Product

Batteries are complex multicomponent devices wherein mesoscale phenomena–the nanoscale structure and chemistry of different components, and interactions thereof–drive functionality and performance. For example, electron/ion transport within the composite electrodes relies on bi-continuous nanostructuring to form electrically and ionicly conductive paths. Electrochemical conversion of different salts of a given metal yields a common and ostensibly identical product: the zero valent metal. For example, maximal lithiation of iron-based electrodes produces metallic iron nanoparticles for oxide, fluoride, and oxyfluoride electrodes alike. Accordingly, these provide an opportunity to explore the coupling of nanostructure development and anion chemistry, and correlate these with electrochemical performance. We combine synchrotron-based small angle X-ray scattering (SAXS) and pair distribution function (PDF) measurements to probe metallic iron formed by electrochemical conversion of different iron compounds across multiple length-scales and decouple the influence of anion chemistry and reaction temperature on the atomic structure and nanoscale morphology.

Absorption Coefficients of Inelastic Dynamic X-Ray Diffraction

2014 ◽  
pp. 483-502
Keyword(s):  
Absorption Coefficient ◽  
Inelastic Scattering ◽  
Waller Factor ◽  
Time Dependent ◽  
X Ray Diffraction ◽  
Absorption Coefficients ◽  
X Ray ◽  
Charge Current ◽  
Dispersion Equations ◽  
Debye Waller Factor

The X-ray inelastic scattering phenomena during the time-dependent perturbations are described with the aid of dynamical dispersion equations coupled with charge current in the Maxwell equations towards the appearance of the Debye-Waller factor driving the absorption coefficient, either for inelastic thermal diffusion and the Compton scattering, respectively.

Ternary transition metal gallides with TiNiSi, ZrBeSi and MgZn2-type structure

2019 ◽  
Vol 74 (3) ◽  
pp. 297-306 ◽  
Author(s):  
Lukas Heletta ◽  
Theresa Block ◽  
Steffen Klenner ◽  
Rainer Pöttgen
Keyword(s):  
Transition Metal ◽  
Powder Diffraction ◽  
Metallic Iron ◽  
Site Occupancy ◽  
Laves Phase ◽  
Structural Motif ◽  
Equiatomic Composition ◽  
Laves Phases ◽  
X Ray ◽  
Arc Melting

AbstractA series of ternary transition metal gallides around the equiatomic composition have been synthesized from the elements by arc-melting and subsequent annealing. The compounds crystallize with site occupancy variants of the hexagonal Laves phase MgZn2, with the hexagonal ZrBeSi or the orthorhombic TiNiSi type. All samples have been characterized on the basis of their lattice parameters, determined by X-ray powder diffraction (Guinier technique). The structures of NbCr1.58Ga0.42 and NbFe1.51Ga0.49 (MgZn2 type, P63/mmc), NbRhGa (ZrBeSi type, P63/mmc), and ScNiGa, ScPtGa and ScAuGa (TiNiSi type, Pnma) were refined from single crystal X-ray diffractometer data. The ScPtGa and ScAuGa crystals showed trilling formation. Mixed site occupancies were only observed in the Laves phases while all other crystals were well ordered. A striking structural motif of NbRhGa is the formation of niobium chains (264 pm Nb–Nb) along the c axis. Several gallides were magnetically characterized. They are Pauli paramagnets. The two crystallographically independent iron sites in the Laves phase TaFeGa could be distinguished in the 57Fe Mössbauer spectrum. The isomer shifts of 0.06(3) (Fe1) and –0.02(3) (Fe2) mm s−1 indicate metallic iron.

Compound focusing for hard-x-ray inelastic scattering

2013 ◽  
Author(s):  
Daisuke Ishikawa ◽  
Hiroshi Uchiyama ◽  
Satoshi Tsutsui ◽  
Hiroshi Fukui ◽  
Alfred Q. R. Baron
Keyword(s):  
Inelastic Scattering ◽  
X Ray
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