Brittle-to-ductile transition and strain relaxation in Si${}_{1-x}$Ge${}_x$ linearly graded buffers

Riccardo Civiero, Elena Campagna, Afonso Cerdeira Oliveira +5

The strain-relaxation mechanism of a set of Si${}_{0.6}$Ge${}_{0.4}$ linearly graded buffers (LGBs), grown following different temperature profiles, has been investigated by means of d…