Fast grain‐boundary diffusion paths in ionic solids: Space‐charge layers versus interfacial core

The accelerated diffusion of ions along grain boundaries in ionic solids may occur along two possible paths: (a) the interface core (IC), as known for metals; and (b) space‐charge layers (SCLs), located adjacent to the core, in which the point defects responsible for diffusion are accumulated. In th...

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Veröffentlicht in:	Journal of the American Ceramic Society 2021-11, Vol.104 (11), p.5946-5954
Hauptverfasser:	Parras, Jana P., Feldmann, Gereon, De Souza, Roger A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cations Crystal defects defects Diffusion layers Diffusion rate diffusion/diffusivity Enthalpy Grain boundaries Ion diffusion Mathematical analysis oxides Point defects Temperature dependence
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