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  • 1 Budapest University of Technology and Economics, Department of Electronics Technology, H-1111 Budapest, Goldmann Gy. tér 3.
  • | 2 University of Debrecen, Department of Experimental Physics, H-4026 Debrecen, Bem tér 18/a, Hungary
  • | 3 University of Debrecen, Department of Solid State Physics, H-4010 Debrecen, POB 2, Hungary
  • | 4 University of Debrecen, Department of Experimental Physics, H-4026 Debrecen, Bem tér 18/a, Hungary
  • | 5 Institute of Technical Physics and Material Sciences of the Hungarian Academy of Sciences, Please ask the editor of the journal.
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We present a simple method of nanocrystal growth during the heating of Au-covered GaAs single crystals in a closed quartz ampoule, previously evacuated to 10-1 Pa. The process is the final stage of surface transformations in such crystals which include the disruption of initially continuous, 50 nm thick Au layer and formation of Au-particle fractals in the relatively low 300-500 °C temperature range and a next step, when a variety of crystalline nanowires and even nanotubes grows on the crystal surface during the further short-period heating up to 550-650 °C. These nanostructures were identified by SEM and TEM measurements as b-Ga2O3 and a non-stoichiometric arsenic oxide. It is supposed that the growth of few nanometer thick arsenic oxide tubes follows the vapour-solid mechanism, whereas the catalytic Au-metal growth of thicker b-Ga2O3 nanowires was dominated by the vapour-liquid-solid mechanism.

 

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Senior editors

Editor-in-Chief: Kukovecz Ákos (SZTE)

Editor-in-Chief: Kónya Zoltán (SZTE)

 

2019  
WoS
Cites
6
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Documents
1

 

Nanopages
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Nanopages
Language English
Size B5
Year of
Foundation
2006
Publication
Programme
2019 Volume 14
Volumes
per Year
1
Issues
per Year
1
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1787-4033 (Print)
ISSN 1788-0718 (Online)

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