Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy
Abstract
The composition of InxGa1 - xN nanorods grown by molecular beam epitaxy with nominal x = 0.5 has been mapped by electron microscopy using Z-contrast imaging and x-ray microanalysis. This shows a coherent and highly strained core-shell structure with a near-atomically sharp boundary between a Ga-rich shell (x ∼ 0.3) and an In-rich core (x ∼ 0.7), which itself has In- and Ga-rich platelets alternating along the growth axis. It is proposed that the shell and core regions are lateral and vertical growth sectors, with the core structure determined by spinodal decomposition.
- Publication:
-
Nanotechnology
- Pub Date:
- May 2014
- DOI:
- 10.1088/0957-4484/25/21/215705
- Bibcode:
- 2014Nanot..25u5705C