A calculation is made of equilibrium concentration of vacancies and divacancies in a binary ordering alloy with an fcc-lattice. It is shown that due to low concentration of both types of defects their formation occurs independently of each other. Unlike that of vacancies, the formation of di...
Enthalpies of formation of vacancies and the energies of inte... Composition and Structure of Vacancy-Oxygen Complexes in Regions of Enhanced Concentration of Point Defects in Pd, Ta, W, and Pt,” Fiz. Met. Metal... SM Klotsman,AN Timofeev,MS Dudarev,... - 《Physics of Metals & ...
The equilibrium defect concentration was obtained as a function of temperature by assuming the primary defects to be monovacancies. The concentration of vacancies is 6.17× 10at the melting point, and the formation energy and entropy of a monovacancy are 0.35 eV and 0.3k, respectively. The ...
Figure 28 shows the distribution of the excess point-defect concentration, defined as the difference between the concentration of vacancies and that of self-interstitials. The regions dominated by vacancies map well with the D-defect regions and the regions dominated by self-interstitials map well ...
How the vacancies in excess of equilibrium concentration are created and destroyed in solids is crucial for understanding many of their physical characteristics and processes. Grain boundaries are known as sources and sinks for bulk vacancies, but what exchange will occur between the grain boundary ...
first to point out that positive- ion vacancies and negative-ion vacancies in an alkali halide crystal will tend to combine in pairs and SEITZ (2) emphasized shortly afterwards that these pairs, and the larger vacancy agglomerates, will play an important role in the physics of these crystals....
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Interstitials, Vacancies and Dislocations in Flux-Line Lattices: A Theory of Vortex Crystals, Supersolids and Liquids We study a three dimensional Abrikosov vortex lattice in the presence of an equilibrium concentration of vacancy, interstitial and dislocation loops. Vacan... MC Marchetti,L Radzihovsk...
intheconcentrationofvacancies*(avacancyiscreatedwhenaAlatomgoestothesurfaceandforevery4vacanciescreatedthevolumeequalto1unitcellisadded).(M→Binfigurebelow).The2ndreasonisofsubtleroriginandmustbesurprisingtomanyreaders.Additionally,itisasmallereffectintermsofitscontributiontotheoverallincreaseinlengthofthespecimen(...
The half-time for crystallization at a given isothermal crystallization temperature appears to slow down, as the concentration of the PVC increases. It is interesting to point out that this crystallization half-time by time-resolved SAXS correlates with the reciprocal linear growth rate of spherulite...