Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station

InGaSb ternary alloys were grown from GaSb (111)A and B faces (Ga and Sb faces) under microgravity conditions on board the International Space Station by a vertical gradient freezing method. The dissolution process of the Ga and Sb faces of GaSb and orientation-dependent growth properties of InGaSb...

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Autores principales: Nirmal Kumar, Velu, Arivanandhan, Mukannan, Rajesh, Govindasamy, Koyama, Tadanobu, Momose, Yoshimi, Sakata, Kaoruho, Ozawa, Tetsuo, Okano, Yasunori, Inatomi, Yuko, Hayakawa, Yasuhiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5515529/
https://www.ncbi.nlm.nih.gov/pubmed/28725736
http://dx.doi.org/10.1038/npjmgrav.2016.26
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author Nirmal Kumar, Velu
Arivanandhan, Mukannan
Rajesh, Govindasamy
Koyama, Tadanobu
Momose, Yoshimi
Sakata, Kaoruho
Ozawa, Tetsuo
Okano, Yasunori
Inatomi, Yuko
Hayakawa, Yasuhiro
author_facet Nirmal Kumar, Velu
Arivanandhan, Mukannan
Rajesh, Govindasamy
Koyama, Tadanobu
Momose, Yoshimi
Sakata, Kaoruho
Ozawa, Tetsuo
Okano, Yasunori
Inatomi, Yuko
Hayakawa, Yasuhiro
author_sort Nirmal Kumar, Velu
collection PubMed
description InGaSb ternary alloys were grown from GaSb (111)A and B faces (Ga and Sb faces) under microgravity conditions on board the International Space Station by a vertical gradient freezing method. The dissolution process of the Ga and Sb faces of GaSb and orientation-dependent growth properties of InGaSb were analysed. The dissolution of GaSb(111)B was greater than that of (111)A, which was found from the remaining undissolved seed and feed crystals. The higher dissolution of the Sb face was explained based on the number of atoms at that face, and its bonding with the next atomic layer. The growth interface shape was almost flat in both cases. The indium composition in both InGaSb samples was uniform in the radial direction and it gradually decreased along the growth direction because of segregation. The growth rate of InGaSb from GaSb (111)B was found to be higher than that of GaSb (111)A because of the higher dissolution of GaSb (111)B.
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spelling pubmed-55155292017-07-19 Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station Nirmal Kumar, Velu Arivanandhan, Mukannan Rajesh, Govindasamy Koyama, Tadanobu Momose, Yoshimi Sakata, Kaoruho Ozawa, Tetsuo Okano, Yasunori Inatomi, Yuko Hayakawa, Yasuhiro NPJ Microgravity Article InGaSb ternary alloys were grown from GaSb (111)A and B faces (Ga and Sb faces) under microgravity conditions on board the International Space Station by a vertical gradient freezing method. The dissolution process of the Ga and Sb faces of GaSb and orientation-dependent growth properties of InGaSb were analysed. The dissolution of GaSb(111)B was greater than that of (111)A, which was found from the remaining undissolved seed and feed crystals. The higher dissolution of the Sb face was explained based on the number of atoms at that face, and its bonding with the next atomic layer. The growth interface shape was almost flat in both cases. The indium composition in both InGaSb samples was uniform in the radial direction and it gradually decreased along the growth direction because of segregation. The growth rate of InGaSb from GaSb (111)B was found to be higher than that of GaSb (111)A because of the higher dissolution of GaSb (111)B. Nature Publishing Group 2016-07-21 /pmc/articles/PMC5515529/ /pubmed/28725736 http://dx.doi.org/10.1038/npjmgrav.2016.26 Text en Copyright © 2016 Published in cooperation with the Biodesign Institute at Arizona State University, with the support of NASA http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Nirmal Kumar, Velu
Arivanandhan, Mukannan
Rajesh, Govindasamy
Koyama, Tadanobu
Momose, Yoshimi
Sakata, Kaoruho
Ozawa, Tetsuo
Okano, Yasunori
Inatomi, Yuko
Hayakawa, Yasuhiro
Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title_full Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title_fullStr Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title_full_unstemmed Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title_short Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station
title_sort investigation of directionally solidified ingasb ternary alloys from ga and sb faces of gasb(111) under prolonged microgravity at the international space station
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5515529/
https://www.ncbi.nlm.nih.gov/pubmed/28725736
http://dx.doi.org/10.1038/npjmgrav.2016.26
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