The role of point defects in the physical properties of nonstoichiometric ceria

2007 ◽  
Vol 101 (4) ◽  
pp. 044906 ◽  
Author(s):  
Keith L. Duncan ◽  
Yanli Wang ◽  
Sean R. Bishop ◽  
Fereshteh Ebrahimi ◽  
Eric D. Wachsman
Keyword(s):  
Physical Properties ◽  
Point Defects

Point Defect Thermodynamics of Compound Semiconductors and their Alloys

1982 ◽  
Vol 14 ◽  
Author(s):  
F. A. Kröger
Keyword(s):  
Physical Properties ◽  
Point Defect ◽  
Phase Diagrams ◽  
Point Defects ◽  
Compound Semiconductors ◽  
Defect Chemistry ◽  
Ternary Compounds ◽  
Partial Pressures ◽  
Binary Compounds

ABSTRACTThe physical properties of crystalline solids depend on the presence of point defects. The concentrations of these defects in turn depend on the conditions of preparation and the presence of dopants. Quantitative relations between these conditions (partial pressures of components, concentrations of dopants, temperature) and the defect concentrations is arrived at on the basis of defect chemistry. Examples of pure and doped binary compounds, alloys of binary compounds, and ternary compounds, are given. Whereas binary compounds have one composition variable, the alloy systems and the ternary compounds have two. The role of phase diagrams in preparing systems of required composition and properties is stressed.

Role of Point Defects in the Physical Properties of Fluorite Oxides

2006 ◽  
Vol 89 (10) ◽  
pp. 3162-3166 ◽  
Author(s):  
Keith L. Duncan ◽  
Yanli Wang ◽  
Sean R. Bishop ◽  
Fereshteh Ebrahimi ◽  
Eric D. Wachsman
Keyword(s):  
Physical Properties ◽  
Point Defects

The role of rheological premonitory of hydrogels based on cellulose nanofibers and polymethylsilsesquioxane on the physical properties of corresponding aerogels

2021 ◽  
Vol 61 (4) ◽  
pp. 1220-1231
Author(s):  
Pragya Gupta ◽  
Akanksha Pandey ◽  
Kirtiraj K. Gaikwad ◽  
Sunanda Roy ◽  
Pradip K. Maji
Keyword(s):  
Physical Properties ◽  
Cellulose Nanofibers

Evaluating the role of soil physical properties on simulated land-atmosphere interactions over South Africa using coupled atmosphere-hydrological modeling

2021 ◽  
Author(s):  
Zhenyu Zhang ◽  
Patrick Laux ◽  
Joël Arnault ◽  
Jianhui Wei ◽  
Jussi Baade ◽  
...  
Keyword(s):  
South Africa ◽  
Physical Properties ◽  
Land Degradation ◽  
Land Surface ◽  
Soil Physical Properties ◽  
Near Surface ◽  
Soil Database ◽  
Global Soil ◽  
The Impact

<p>Land degradation with its direct impact on vegetation, surface soil layers and land surface albedo, has great relevance with the climate system. Assessing the climatic and ecological effects induced by land degradation requires a precise understanding of the interaction between the land surface and atmosphere. In coupled land-atmosphere modeling, the low boundary conditions impact the thermal and hydraulic exchanges at the land surface, therefore regulates the overlying atmosphere by land-atmosphere feedback processes. However, those land-atmosphere interactions are not convincingly represented in coupled land-atmosphere modeling applications. It is partly due to an approximate representation of hydrological processes in land surface modeling. Another source of uncertainties relates to the generalization of soil physical properties in the modeling system. This study focuses on the role of the prescribed physical properties of soil in high-resolution land surface-atmosphere simulations over South Africa. The model used here is the hydrologically-enhanced Weather Research and Forecasting (WRF-Hydro) model. Four commonly used global soil datasets obtained from UN Food and Agriculture Organization (FAO) soil database, Harmonized World Soil Database (HWSD), Global Soil Dataset for Earth System Model (GSDE), and SoilGrids dataset, are incorporated within the WRF-Hydro experiments for investigating the impact of soil information on land-atmosphere interactions. The simulation results of near-surface temperature, skin temperature, and surface energy fluxes are presented and compared to observational-based reference dataset. It is found that simulated soil moisture is largely influenced by soil texture features, which affects its feedback to the atmosphere.</p>

Role of induced quadrupoles in the simulation of intrinsic point defects in AgCl and NaCl

1993 ◽  
Vol 48 (10) ◽  
pp. 6839-6853 ◽  
Author(s):  
Radha D. Banhatti ◽  
Y. V. G. S. Murti
Keyword(s):  
Point Defects ◽  
Intrinsic Point Defects

Some Physical Properties and Point Defects in Bi2 Te3−xSx Mixed Crystals

1984 ◽  
Vol 84 (2) ◽  
pp. K143-K147 ◽  
Author(s):  
P. Lošť??k ◽  
J. Horák ◽  
L. Koudelka
Keyword(s):  
Physical Properties ◽  
Point Defects ◽  
Mixed Crystals

The role of diagenesis in the development of physical properties of deep-sea carbonate sediments

1985 ◽  
Vol 69 (1-2) ◽  
pp. 69-91 ◽  
Author(s):  
Dae-Choul Kim ◽  
Murli H Manghnani ◽  
Seymour O Schlanger
Keyword(s):  
Physical Properties ◽  
Deep Sea ◽  
Carbonate Sediments
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