INFLUENCE OF ALPHA PARTICLE IRRADIATION ON DYNAMIC MECHANICAL PROPERTIES OF p-SiGe SUBSTRATES
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Keywords

silicon
germanium
alpha particle
shear modulus
elastic limit
dynamic strengthening

How to Cite

Kurashvili, I., Shamatava, K., Sanaia, E., Chubinidze, G., & Darsavelidze, G. (2023). INFLUENCE OF ALPHA PARTICLE IRRADIATION ON DYNAMIC MECHANICAL PROPERTIES OF p-SiGe SUBSTRATES. Georgian Scientists, 5(2), 63–70. https://doi.org/10.52340/gs.2023.05.02.08

Abstract

Influence of alpha particle irradiation on electrophysical and  dynamic mechanical properties of p-SiGe substrates with (111) orientation has been studied. Experimental results show, that changes in electrical resistance and concentration of current-carriers holes are more revelaed in p-Si+2%Ge:B substrates with high Ge content.  In the alpha-irradiated test samples increase of the values of torsional oscillations strain amplitude and elastic limit by 1.5-1.8 times and 15 % increase of absolute value of shear modulus are observed. It is supposed, that the radiation point defects induced by alpha particle irradiation in the p-SiGe crystalline lattice form additional braking centers for dislocation motion  and cause the radiation origin dynamic mechanical strengthening. The strengthening effect is more revealed in p-Si+2%Ge:B alloy.

https://doi.org/10.52340/gs.2023.05.02.08
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Copyright (c) 2023 GEORGIAN SCIENTISTS

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