TY - JOUR AU - Kurashvili, Ia AU - Shamatava, Kakhaber AU - Sanaia, Ekaterine AU - Chubinidze, Giorgi AU - Darsavelidze, Giorgi PY - 2023/04/28 Y2 - 2024/03/29 TI - INFLUENCE OF ALPHA PARTICLE IRRADIATION ON DYNAMIC MECHANICAL PROPERTIES OF p-SiGe SUBSTRATES JF - Georgian Scientists JA - GS VL - 5 IS - 2 SE - ARTICLES DO - 10.52340/gs.2023.05.02.08 UR - https://journals.4science.ge/index.php/GS/article/view/1688 SP - 63-70 AB - <p>Influence of alpha particle irradiation on electrophysical and &nbsp;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. &nbsp;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 &nbsp;and cause the radiation origin dynamic mechanical strengthening. The strengthening effect is more revealed in p-Si+2%Ge:B alloy.</p> ER -