Self-assembled core-shell structured rare-earth nanoparticles (TbErAs) are observed in a III-V semiconductor host matrix (In0.53Ga0.47As) nominally lattice-matched to InP, grown via molecular beam epitaxy. Atom probe tomography demonstrates that the TbErAs nanoparticles have a core-shell structure, as seen both in the tomographic atom-by-atom reconstruction and concentration profi les. A simple thermodynamic model is created to determine when it is energetically favorable to have core-shell structures; the results strongly agree with the observations.
|Original language||English (US)|
|Number of pages||6|
|State||Published - Dec 10 2014|
- Atom probe tomography
- Molecular beam epitaxy
ASJC Scopus subject areas
- Materials Science(all)