Grain-boundary resistivity versus grain size distribution in three-dimensional polycrystals

被引：11

作者：

Dezanneau, G

Morata, A

Tarancón, A

Salleras, M

Peiró, F

Morante, JR

机构：

[1] Univ Barcelona, Dept Elect, EME CEMIC & CERMAE, E-08028 Barcelona, Spain

[2] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, F-92295 Chatenay Malabry, France

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 14期

关键词：

D O I：

10.1063/1.2189017

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the accuracy of the bricklayer model in the evaluation of the grain-boundary resistivity associated to a real three-dimensional (3D) polycrystal. An impedance network electrically equivalent to the 3D structure has been solved by direct calculation. In order to examine the progressive evolution from the bricklayer model to a completely disordered system, the ideal polycrystal was modified in a controlled way, according to a Voronoi diagram approach. From this, the grain-boundary resistivity of a polycrystal, as deduced from the 3D bricklayer model, is lower than the real value. The upper limit of the error made is around 15% in relation to the real one. (c) 2006 American Institute of Physics.

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页数：3

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