Observation of Self‐Assembled Core–Shell Structures in Epitaxially Embedded TbErAs Nanoparticles
Source abstract
Abstract
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 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.
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Research context
OpenAlex topics: Advanced Materials Characterization Techniques · Surface and Thin Film Phenomena · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering University of Delaware 201 Dupont Hall Newark Delaware 19716 USA
Department of Materials Science and Engineering Drexel University LeBow Hall 441 Philadelphia Pennsylvania 19104 USA
Department of Chemical Engineering University of Delaware 201 Dupont Hall Newark Delaware 19716 USA
Department of Materials Science and Engineering and Northwestern University Center for Atom‐Probe Tomography Northwestern University 2220 Campus Drive Evanston IL 60208–3108 USA
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