CRITICAL LAYER THICKNESS FOR MISFIT DISLOCATION STABILITY IN MULTILAYER STRUCTURES

被引：91

作者：

HIRTH, JP

FENG, XX

机构：

[1] Department of Mechanical and Materials Engineering, Washington State University, Pullman

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 07期

关键词：

D O I：

10.1063/1.345371

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The critical thickness for which the injection of misfit dislocations into a strained layer becomes thermodynamically favorable is treated in a Volterra dislocation model. Both a single interior layer and a multilayer (superlattice) case are considered. The results agree with earlier simple dipole predictions in the limit of large misfit dislocation spacing, but deviate at smaller spacings. With a particular core parameter, the results also agree with atomistic calculations using a parabolic potential for a constrained glide equilibrium case.

引用

页码：3343 / 3349

页数：7

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