Abstract
The transformations between the η and η′ phases of Cu3Si were studied by in situ transmission electron microscope (TEM) diffraction analysis and by differential scanning calorimetry (DSC). The space groups of η and η′ are and , respectively. The lattice parameters of η are a = 4.06 Å and c = 7.33 Å. The η′ phase results from faulted stacking of the η unit cell, and has lattice parameters: a = 35.16 Å and c = 21.99 Å. A long-period anti-phase domain structure appears in these two phases and is part of a sequence of phase transformations from η′ to η upon heating. The Cu silicide precipitates that form in voids in silicon are the η′ phase, oriented in the silicon matrix according to: (0001)η'∥(110)Si; [001]Si.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
