Bond ionicity and structural stability of some average-valence-five materials studied by x-ray photoemission

1977 ◽  
Vol 15 (4) ◽  
pp. 1680-1697 ◽  
Author(s):  
R. B. Shalvoy ◽  
G. B. Fisher ◽  
P. J. Stiles
Keyword(s):  
Structural Stability ◽  
Bond Ionicity ◽  
X Ray ◽  
Average Valence

Structural Stability of CdSe Nanocrystallite Dispersions

1995 ◽  
Vol 400 ◽  
Author(s):  
H. Mattoussi ◽  
C.B. Murray ◽  
M.G. Bawendi ◽  
R. Ober
Keyword(s):  
Thermodynamic Properties ◽  
Structural Stability ◽  
Particle Interactions ◽  
X Ray ◽  
X Ray Scattering ◽  
Crystallite Surface ◽  
Ray Scattering

AbstractX-ray scattering at small angles (SAXS) is used to study the structure and the thermodynamic properties of dispersions of CdSe nanocrystallite particles. In particular, this study allowed us to probe the inter particle interactions, and their dependence on several relevant parameters, such as the nature and size of the capping units attached to the crystallite surface and solvent.

scholarly journals The Structural Stability of Soft Magnetic Fe-Co-Zr-W-B Metallic Glasses Investigated by the in-situ X-ray Diffraction

2014 ◽  
Vol 126 (1) ◽  
pp. 66-67
Author(s):  
S. Michalik ◽  
J. Bednarcik ◽  
P. Pawlik ◽  
R. Matija ◽  
P. Sovak
Keyword(s):  
Structural Stability ◽  
Metallic Glasses ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
X Ray

Nature of the clay - cation bond affects soil structure as verified by X-ray computed tomography

Soil Research ◽  
2012 ◽  
Vol 50 (8) ◽  
pp. 638 ◽  
Author(s):  
Alla Marchuk ◽  
Pichu Rengasamy ◽  
Ann McNeill ◽  
Anupama Kumar
Keyword(s):  
Computed Tomography ◽  
Hydraulic Conductivity ◽  
Zeta Potential ◽  
Structural Stability ◽  
Structural Parameters ◽  
Pore Connectivity ◽  
X Ray ◽  
Clay Dispersion ◽  
X Ray Computed ◽  
Cation Ratio

Non-destructive X-ray computed tomography (µCT) scanning was used to characterise changes in pore architecture as influenced by the proportion of cations (Na, K, Mg, or Ca) bonded to soil particles. These observed changes were correlated with measured saturated hydraulic conductivity, clay dispersion, and zeta potential, as well as cation ratio of structural stability (CROSS) and exchangeable cation ratio. Pore architectural parameters such as total porosity, closed porosity, and pore connectivity, as characterised from µCT scans, were influenced by the valence of the cation and the extent it dominated in the soil. Soils with a dominance of Ca or Mg exhibited a well-developed pore structure and pore interconnectedness, whereas in soil dominated by Na or K there were a large number of isolated pore clusters surrounded by solid matrix where the pores were filled with dispersed clay particles. Saturated hydraulic conductivities of cationic soils dominated by a single cation were dependent on the observed pore structural parameters, and were significantly correlated with active porosity (R2 = 0.76) and pore connectivity (R2 = 0.97). Hydraulic conductivity of cation-treated soils decreased in the order Ca > Mg > K > Na, while clay dispersion, as measured by turbidity and the negative charge of the dispersed clays from these soils, measured as zeta potential, decreased in the order Na > K > Mg > Ca. The results of the study confirm that structural changes during soil–water interaction depend on the ionicity of clay–cation bonding. All of the structural parameters studied were highly correlated with the ionicity indices of dominant cations. The degree of ionicity of an individual cation also explains the different effects caused by cations within a monovalent or divalent category. While sodium adsorption ratio as a measure of soil structural stability is only applicable to sodium-dominant soils, CROSS derived from the ionicity of clay–cation bonds is better suited to soils containing multiple cations in various proportions.

Structural Stability of Soybean Lipoxygenase-1 in Solution as Probed by Small Angle X-ray Scattering

2005 ◽  
Vol 349 (1) ◽  
pp. 143-152 ◽  
Author(s):  
Enrico Dainese ◽  
Annalaura Sabatucci ◽  
Guus van Zadelhoff ◽  
Clotilde Beatrice Angelucci ◽  
Patrice Vachette ◽  
...  
Keyword(s):  
Structural Stability ◽  
Small Angle ◽  
Soybean Lipoxygenase ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Thermal structural stability of a multi-component olivine electrode for lithium ion batteries

CrystEngComm ◽  
2016 ◽  
Vol 18 (39) ◽  
pp. 7463-7470 ◽  
Author(s):  
Kyu-Young Park ◽  
Hyungsub Kim ◽  
Seongsu Lee ◽  
Jongsoon Kim ◽  
Jihyun Hong ◽  
...  
Keyword(s):  
High Temperature ◽  
Neutron Diffraction ◽  
Lithium Ion Batteries ◽  
Structural Stability ◽  
Cathode Materials ◽  
Structural Evolution ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
X Ray

In this paper, the structural evolution of Li(Mn1/3Fe1/3Co1/3)PO4, which is a promising multi-component olivine cathode materials, is investigated using combined in situ high-temperature X-ray diffraction and flux neutron diffraction analyses at various states of charge.

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