Premium
Observation of Self‐Assembled Core–Shell Structures in Epitaxially Embedded TbErAs Nanoparticles
Author(s) -
Dongmo Pernell,
Hartshorne Matthew,
Cristiani Thomas,
Jablonski Michael L.,
Bomberger Cory,
Isheim Dieter,
Seidman David N.,
Taheri Mitra L.,
Zide Joshua
Publication year - 2014
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201400891
Subject(s) - atom probe , nanoparticle , materials science , epitaxy , atom (system on chip) , core (optical fiber) , shell (structure) , molecular beam epitaxy , lattice (music) , nanotechnology , chemical physics , crystallography , molecular physics , chemistry , composite material , physics , transmission electron microscopy , layer (electronics) , computer science , acoustics , embedded system
Self‐assembled core–shell structured rare‐earth nanoparticles (TbErAs) are observed in a III–V semiconductor host matrix (In 0.53 Ga 0.47 As) 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 profiles. 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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom