Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods
Two In x Ga1−x N nanorod samples with graded In compositions of x = 0.5–0 (Ga-rich) and x = 0.5–1 (In-rich) grown by molecular beam epitaxy were studied using transmission electron microscopy. The nanorods had a wurtzite crystal structure with growth along 0001 and core–shell structures with an In-r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018
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| Online Access: | https://eprints.nottingham.ac.uk/53992/ |
| _version_ | 1848799005653336064 |
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| author | Soundararajah, Q.Y. Webster, R.F. Griffiths, I.J. Novikov, S.V. Foxon, C.T. Cherns, D. |
| author_facet | Soundararajah, Q.Y. Webster, R.F. Griffiths, I.J. Novikov, S.V. Foxon, C.T. Cherns, D. |
| author_sort | Soundararajah, Q.Y. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Two In x Ga1−x N nanorod samples with graded In compositions of x = 0.5–0 (Ga-rich) and x = 0.5–1 (In-rich) grown by molecular beam epitaxy were studied using transmission electron microscopy. The nanorods had a wurtzite crystal structure with growth along 0001 and core–shell structures with an In-rich core and Ga-rich shell. Energy-dispersive x-ray analysis confirmed grading over the entire compositional range and showed that the axial growth rate was primarily determined by the In flux, and the radial growth rate by the Ga flux. There was no evidence of misfit dislocations due to grading, but the strain due to the lattice mismatch between the In-rich core and Ga-rich shell was relaxed by edge dislocations at the core–shell interface with Burgers vectors a and c |
| first_indexed | 2025-11-14T20:28:47Z |
| format | Article |
| id | nottingham-53992 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:28:47Z |
| publishDate | 2018 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-539922019-07-30T04:30:19Z https://eprints.nottingham.ac.uk/53992/ Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods Soundararajah, Q.Y. Webster, R.F. Griffiths, I.J. Novikov, S.V. Foxon, C.T. Cherns, D. Two In x Ga1−x N nanorod samples with graded In compositions of x = 0.5–0 (Ga-rich) and x = 0.5–1 (In-rich) grown by molecular beam epitaxy were studied using transmission electron microscopy. The nanorods had a wurtzite crystal structure with growth along 0001 and core–shell structures with an In-rich core and Ga-rich shell. Energy-dispersive x-ray analysis confirmed grading over the entire compositional range and showed that the axial growth rate was primarily determined by the In flux, and the radial growth rate by the Ga flux. There was no evidence of misfit dislocations due to grading, but the strain due to the lattice mismatch between the In-rich core and Ga-rich shell was relaxed by edge dislocations at the core–shell interface with Burgers vectors a and c IOP Publishing 2018-10-05 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/53992/1/InGaN%20paper_240418.pdf Soundararajah, Q.Y., Webster, R.F., Griffiths, I.J., Novikov, S.V., Foxon, C.T. and Cherns, D. (2018) Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods. Nanotechnology, 29 (40). 405706/1-405706/8. ISSN 1361-6528 http://iopscience.iop.org/article/10.1088/1361-6528/aad38d/meta doi:10.1088/1361-6528/aad38d doi:10.1088/1361-6528/aad38d |
| spellingShingle | Soundararajah, Q.Y. Webster, R.F. Griffiths, I.J. Novikov, S.V. Foxon, C.T. Cherns, D. Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title | Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title_full | Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title_fullStr | Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title_full_unstemmed | Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title_short | Composition and strain relaxation of In x Ga1−x N graded core–shell nanorods |
| title_sort | composition and strain relaxation of in x ga1−x n graded core–shell nanorods |
| url | https://eprints.nottingham.ac.uk/53992/ https://eprints.nottingham.ac.uk/53992/ https://eprints.nottingham.ac.uk/53992/ |