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Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions

GeMn/Ge epitaxial 'superlattices' grown by molecular beam epitaxy with different growth conditions have been systematically investigated by transmission electron microscopy. It is revealed that periodic arrays of GeMn nanodots can be formed on Ge and GaAs substrates at low temperature (app...

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Autores principales: Wang, Ya, Liao, Zhiming, Xu, Hongyi, Xiu, Faxian, Kou, Xufeng, Wang, Yong, Wang, Kang L, Drennan, John, Zou, Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3285769/
https://www.ncbi.nlm.nih.gov/pubmed/22151995
http://dx.doi.org/10.1186/1556-276X-6-624
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author Wang, Ya
Liao, Zhiming
Xu, Hongyi
Xiu, Faxian
Kou, Xufeng
Wang, Yong
Wang, Kang L
Drennan, John
Zou, Jin
author_facet Wang, Ya
Liao, Zhiming
Xu, Hongyi
Xiu, Faxian
Kou, Xufeng
Wang, Yong
Wang, Kang L
Drennan, John
Zou, Jin
author_sort Wang, Ya
collection PubMed
description GeMn/Ge epitaxial 'superlattices' grown by molecular beam epitaxy with different growth conditions have been systematically investigated by transmission electron microscopy. It is revealed that periodic arrays of GeMn nanodots can be formed on Ge and GaAs substrates at low temperature (approximately 70°C) due to the matched lattice constants of Ge (5.656 Å) and GaAs (5.653 Å), while a periodic Ge/GeMn superlattice grown on Si showed disordered GeMn nanodots with a large amount of stacking faults, which can be explained by the fact that Ge and Si have a large lattice mismatch. Moreover, by varying growth conditions, the GeMn/Ge superlattices can be manipulated from having disordered GeMn nanodots to ordered coherent nanodots and then to ordered nanocolumns. PACS: 75.50.Pp; 61.72.-y; 66.30.Pa; 68.37.L.
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spelling pubmed-32857692012-02-24 Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions Wang, Ya Liao, Zhiming Xu, Hongyi Xiu, Faxian Kou, Xufeng Wang, Yong Wang, Kang L Drennan, John Zou, Jin Nanoscale Res Lett Nano Express GeMn/Ge epitaxial 'superlattices' grown by molecular beam epitaxy with different growth conditions have been systematically investigated by transmission electron microscopy. It is revealed that periodic arrays of GeMn nanodots can be formed on Ge and GaAs substrates at low temperature (approximately 70°C) due to the matched lattice constants of Ge (5.656 Å) and GaAs (5.653 Å), while a periodic Ge/GeMn superlattice grown on Si showed disordered GeMn nanodots with a large amount of stacking faults, which can be explained by the fact that Ge and Si have a large lattice mismatch. Moreover, by varying growth conditions, the GeMn/Ge superlattices can be manipulated from having disordered GeMn nanodots to ordered coherent nanodots and then to ordered nanocolumns. PACS: 75.50.Pp; 61.72.-y; 66.30.Pa; 68.37.L. Springer 2011-12-12 /pmc/articles/PMC3285769/ /pubmed/22151995 http://dx.doi.org/10.1186/1556-276X-6-624 Text en Copyright ©2011 Wang et al; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Wang, Ya
Liao, Zhiming
Xu, Hongyi
Xiu, Faxian
Kou, Xufeng
Wang, Yong
Wang, Kang L
Drennan, John
Zou, Jin
Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title_full Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title_fullStr Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title_full_unstemmed Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title_short Structural evolution of GeMn/Ge superlattices grown by molecular beam epitaxy under different growth conditions
title_sort structural evolution of gemn/ge superlattices grown by molecular beam epitaxy under different growth conditions
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3285769/
https://www.ncbi.nlm.nih.gov/pubmed/22151995
http://dx.doi.org/10.1186/1556-276X-6-624
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