Strained Ga0.2In0.8As and InAs islands were grown on a InP(113)B substrate
by gas source molecular beam epitaxy and examined by transmission electron
microscopy and atomic force microscopy. The islands are mainly bounded by t
he low-index facets {001}, {111}B, and {110} [inclination with respect to t
he (113)B surface of 25 degrees, 29 degrees, and 31 degrees, respectively].
Some of the consequences of the substrate orientation on the island shape
and formation are discussed. (C) 1999 American Institute of Physics. [S0003
-6951(99)01712-X].