Erratum: Oxygen Diffusion in Periclase Crystals
نویسندگان
چکیده
منابع مشابه
Oxygen diffusion in titanite: Lattice diffusion and fast-path diffusion in single crystals
Oxygen diffusion in natural and synthetic single-crystal titanite was characterized under both dry and water-present conditions. For the dry experiments, pre-polished titanite samples were packed in O-enriched quartz powder inside Ag–Pd capsules, along with a fayalite–magnetite–quartz (FMQ) buffer assemblagemaintained physically separate by Ag–Pd strips. The sealed Ag–Pd capsules were themselve...
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Perovskites are known as mixed electric conductors because they show both electronic (via electron holes) and ionic (via oxygen vacancies) conductivity. Since the electron conductivity is orders of magnitude higher than the ionic one, oxygen vacancy bulk diffusion is regarded as the rate limiting step in oxygen permeation through perovskites. However, for thin perovskite layer the rate of this ...
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Like most other minerals, titanite rarely if ever forms perfect crystals. In addition to the point defects that might affect lattice diffusion, there may be extended lineor planar defects along which fast diffusion could occur. During the course of an experimental study of oxygen lattice diffusion in titanite, we found that almost all of the O uptake profiles produced in natural titanite crysta...
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The Soret effect, as it occurs in the diffusion of solutes in crystals, is analyzed using the principle of microscopic reversibility whereby an approach is developed for interpreting and computing Q*, the heat of transport. To compute the transport of energy during the diffusion jump process, and then Q*, the processes of thermal activation to the transition state and the decay from the transit...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 1961
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.1701016