Self-diffusion and isotope effect in α-ironSelf-diffusion and isotope effect in α-iron have been studied by a serial radio-frequency sputter-microsectioning method with radioactive tracers 55Fe and 59Fe in the temperature range 766–1148 K. Above the Curie temperature the self-diffusion ...
Furthermore the simultaneous diffusion of Fe 55 and Fe 59 in iron was investigated at 6 temperatures in the above-mentioned interval. For the isotope effect E B, which is defined by the equation: E B = 1 D B D A 1 m A m B 1 2 where D H/ D A and m A/ m B are the ...
The self-diffusion of the Fe 59 isotope in γ-iron was measured at 15 different temperatures between 1170 and 1361°C by the tracer-sectioning technique. The temperature dependence of the diffusion coefficient is given by D= 0.49 +.038 0.29exp 67860±1450 RT cm 2 dec. Furthermore the simul...
Lattice defects in plastic organic crystals. Part 6.—Dislocation etching in adamantane Dislocation etching in adamantane. Trans Faraday Soc. 1971;67:1200-2.Lattice defects in plastic organic crystals. Part 7.-Isotope mass effects in self-diffusion in cyclohexane. A. V. Chadwick,J. N. Sherwood...
isotope effectsmethyl internal rotationmolecular recognitionself‐assemblyvan ’t Hoff plotsNo abstract is available for this article.doi:10.1002/chem.201090010Takeharu HainoDepartment of Chemistry, Graduate School of Science, Hiroshima University, 1‐3‐1 Kagamiyama, Higashi‐Hiroshima 739‐8526 (Japan)...
and evolution. The diffusion of hydrogen (H) controls the transport of H2O in the Earth’s upper mantle, but is not fully understood for olivine ((Mg, Fe)2SiO4) the most abundant mineral in this region. Here we present new hydrogen self-diffusion coefficients in natural olivine single ...
We have studied the Ga self-diffusion in GaAs and its dependence on Si doping using ~(69)GaAs/~(69)Ga~(71)GaAs isotope superlattices with [Si] chemical bounds 1x10~(17)-3x10~(18) cm~(-3) grown by molecular-beam epitaxy. The depth profiles of ~(71)Ga atoms before and after therm...
In natural and laboratory-based environments experiencing sustained counter fluxes of sulfide and oxidants, elemental sulfur (S0)—a key intermediate in the sulfur cycle—can commonly accumulate. S0 is frequently invoked as a biomineralization product ge
Ding F, Rosen A, Bolton K (2005) Dependence of SWNT growth mechanism on temperature and catalyst particle size: bulk versus surface diffusion. Carbon 43:2215–2217 ArticleCASGoogle Scholar Ding F, Rosen A, Campbell CJ, Falk LKL, Bolton K (2006) Graphitic encapsulation of catalyst particles ...
The boron carbide coating prefers to grow on the diamond (100) surface rather than on the diamond (111) surface because atomic diffusion on the diamond (111) surface is more difficult. The diamond particle was completely covered by coating on tahsetdoiicahmioomndetpraicrtBic4lCesccooantitnr...