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Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films
The possibility of a new technique for fabricating nanoparticles from thin films using selective oxidation in an atmosphere mixture of water vapor and hydrogen was investigated. Fe-5wt.%Al films were RF-sputtered and annealed in the atmosphere mixture at 900°C for up to 200 min, in order to oxidize...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3626945/ https://www.ncbi.nlm.nih.gov/pubmed/23547781 http://dx.doi.org/10.1186/1556-276X-8-152 |
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author | Jang, Pyungwoo Shin, Seungchan Jung, Chip-Sup Kim, Kwang-Ho Seomoon, Kyu |
author_facet | Jang, Pyungwoo Shin, Seungchan Jung, Chip-Sup Kim, Kwang-Ho Seomoon, Kyu |
author_sort | Jang, Pyungwoo |
collection | PubMed |
description | The possibility of a new technique for fabricating nanoparticles from thin films using selective oxidation in an atmosphere mixture of water vapor and hydrogen was investigated. Fe-5wt.%Al films were RF-sputtered and annealed in the atmosphere mixture at 900°C for up to 200 min, in order to oxidize aluminum selectively. Thermodynamics simulation showed that temperatures exceeding 800°C are necessary to prevent iron from being oxidized, as confirmed by the depth profile of XPS. As the annealing time increased, the morphology of the 200-nm Fe-Al films changed from the continuous to the discontinuous type; thus, particulate Fe-Al films formed after 100 min. The particulate 10- to 100-nm Fe-Al films showed super-paramagnetic behavior after the oxidation. Thus, a new technique for fabricating nanoparticles was successfully introduced using selective oxidation. |
format | Online Article Text |
id | pubmed-3626945 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-36269452013-04-16 Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films Jang, Pyungwoo Shin, Seungchan Jung, Chip-Sup Kim, Kwang-Ho Seomoon, Kyu Nanoscale Res Lett Nano Express The possibility of a new technique for fabricating nanoparticles from thin films using selective oxidation in an atmosphere mixture of water vapor and hydrogen was investigated. Fe-5wt.%Al films were RF-sputtered and annealed in the atmosphere mixture at 900°C for up to 200 min, in order to oxidize aluminum selectively. Thermodynamics simulation showed that temperatures exceeding 800°C are necessary to prevent iron from being oxidized, as confirmed by the depth profile of XPS. As the annealing time increased, the morphology of the 200-nm Fe-Al films changed from the continuous to the discontinuous type; thus, particulate Fe-Al films formed after 100 min. The particulate 10- to 100-nm Fe-Al films showed super-paramagnetic behavior after the oxidation. Thus, a new technique for fabricating nanoparticles was successfully introduced using selective oxidation. Springer 2013-04-02 /pmc/articles/PMC3626945/ /pubmed/23547781 http://dx.doi.org/10.1186/1556-276X-8-152 Text en Copyright ©2013 Jang 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 Jang, Pyungwoo Shin, Seungchan Jung, Chip-Sup Kim, Kwang-Ho Seomoon, Kyu Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title | Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title_full | Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title_fullStr | Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title_full_unstemmed | Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title_short | Fabrication of Fe-Al nanoparticles by selective oxidation of Fe-Al thin films |
title_sort | fabrication of fe-al nanoparticles by selective oxidation of fe-al thin films |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3626945/ https://www.ncbi.nlm.nih.gov/pubmed/23547781 http://dx.doi.org/10.1186/1556-276X-8-152 |
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