Solid State Ionics, volume 131, issue 1-2, pages 13-22

Point-defect thermodynamics and size effects

Publication typeJournal Article
Publication date2000-06-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.2
ISSN01672738
General Chemistry
Condensed Matter Physics
General Materials Science
Abstract
The introductory part reviews some basic aspects of bulk point-defect thermodynamics. It makes use of the fact that for the purposes under consideration, the real structure can be decomposed in a perfect ground structure and a superimposed defect structure. Then modifications of the point-defect concentration and distribution are considered occurring if interfaces are approached. A simple treatment is possible for the abrupt core-space charge situation in which the standard chemical potentials are assumed to change in a step-like way. Evidence is given that in very many cases this is a reasonable model. There, the adjustment at interfaces occurs solely via space charge regions. ‘Trivial’ size effects are brought about by the changed surface (i.e. core plus space charge layer) to volume ratio. A mesoscale size effect is expected if the width of the space charge layers is no longer small compared with the distance of neighbouring interfaces (Debye-length λ as scaling parameter). In some situations, e.g. if extremely small clusters are treated, distinct deviations in the ground structure also occur, affecting energetic and entropic standard terms. Since such modifications usually decay steeply with increasing interfacial distance ( L ), another scaling parameter (l) defines a further mesoscopic regime. As examples, micro- and nano-sized particles, films, polycrystals and composites are discussed.

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Maier J. Point-defect thermodynamics and size effects // Solid State Ionics. 2000. Vol. 131. No. 1-2. pp. 13-22.
GOST all authors (up to 50) Copy
Maier J. Point-defect thermodynamics and size effects // Solid State Ionics. 2000. Vol. 131. No. 1-2. pp. 13-22.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/S0167-2738(00)00618-4
UR - https://doi.org/10.1016/S0167-2738(00)00618-4
TI - Point-defect thermodynamics and size effects
T2 - Solid State Ionics
AU - Maier, Joachim
PY - 2000
DA - 2000/06/01 00:00:00
PB - Elsevier
SP - 13-22
IS - 1-2
VL - 131
SN - 0167-2738
ER -
BibTex |
Cite this
BibTex Copy
@article{2000_Maier,
author = {Joachim Maier},
title = {Point-defect thermodynamics and size effects},
journal = {Solid State Ionics},
year = {2000},
volume = {131},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/S0167-2738(00)00618-4},
number = {1-2},
pages = {13--22},
doi = {10.1016/S0167-2738(00)00618-4}
}
MLA
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MLA Copy
Maier, Joachim. “Point-defect thermodynamics and size effects.” Solid State Ionics, vol. 131, no. 1-2, Jun. 2000, pp. 13-22. https://doi.org/10.1016/S0167-2738(00)00618-4.
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