Search

The crack resistance of silicon samples with copper coatings has been studied at room temperature. It has been shown that the deposition of copper coatings on the silicon surface is accompanied by an increase in the crack resistance factor and the formation of regions with dislocations in external load zones, which indicates plastic deformation in the brittle fracture zone.

The possibility of magnetic ordering at dangling bonds in dislocation cores has been investigated theoretically. It has been experimentally shown that magnetic ordering in dislocations affects the spin-dependent effects occurring in dislocation crystals of silicon. It has been found that preliminary magnetic treatment of silicon crystals in a weak magnetic field leads to the suppression of the electroplastic effect induced in silicon crystals excited by an electric current. It has been assumed that a change in the microplasticity under the combined action of a magnetic field and an electric current is caused by a weakening of spin-dependent recombination at dislocation dangling bonds.

The effect of low-energy (W = 8 keV) low-dose ((0.3–7.3) × 102 Gy) radiation and a dc magnetic field (B = 0.17 T) on structural, micromechanical, and microplastic characteristics of silicon crystals has been studied. The features in the dynamic behavior of dislocations in silicon crystals, which manifest themselves upon only X-ray exposure and combined (X-ray and magnetic) exposure, have been revealed.