This article is cited in 4 papers

Mechanical properties, strength physics and plasticity

Experimental and theoretical investigation of formation of the oxygen-containing precipitate-dislocation loop system in silicon

R. V. Goldshtejn^a, M. V. Mezhennyi^b, M. G. Mil'vidskii^b, V. Ya. Reznik^b, K. B. Ustinov^a, P. S. Shushpannikov<sup>a

a</sup> Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, Moscow
^b JSC "Giredmet" SRC RF, the Federal State Research and Design Institute of Rare Metal Industry, Moscow

Abstract: A model of coherent and incoherent oxygen-containing precipitates formed in an anisotropic silicon crystal due to the decomposition of a supersaturated oxygen solid solution has been considered. The stresses acting inside and outside the precipitate have been determined in the framework of the classical Eshelby’s approach. A criterion has been proposed for the generation of the misfit dislocation and the onset of motion of the perfect interstitial dislocation loop lying in the precipitate plane. The proposed precipitate model and criterion have been used for determining the dependence of the precipitate radius that corresponds to the formation of the misfit dislocation and the onset of motion of the perfect interstitial dislocation loop when an external load is applied to the sample. The results obtained are compared with the available experimental data.

Received: 24.06.2010

 English version: Physics of the Solid State, 2011, 53:3, 527–538

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