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An epitaxial film is deposited with a lattice mismatch of 2% relative to a substrate whose...

An epitaxial film is deposited with a lattice mismatch of 2% relative to a substrate whose
diameter is 10 cm. The epilayer grown at elevated temperature is thick enough that the residual
strain is zero.
(a) If the Burgers vector is 2Å, what is the spacing between interfacial misfit-dislocations?
(b) A misfit dislocation grid covers the entire film/substrate interface. What is the total
length of the dislocation line?
(c) Estimate the dislocation density.

Science   Advanced-Physics   
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