Effect of Mn concentration and growth temperature on nanostructures and magnetic properties of Ge1-xMnx grown on Si

Wang, Ya, Xiu, Faxian, Wang, Yong, Xu, Hongyi, Li, De, Kou, Xufeng, Wang, Kang L., Jacob, Ajey P. and Zou, Jin (2010) Effect of Mn concentration and growth temperature on nanostructures and magnetic properties of Ge1-xMnx grown on Si. Journal of Crystal Growth, 312 20: 3034-3039. doi:10.1016/j.jcrysgro.2010.07.008


Author Wang, Ya
Xiu, Faxian
Wang, Yong
Xu, Hongyi
Li, De
Kou, Xufeng
Wang, Kang L.
Jacob, Ajey P.
Zou, Jin
Title Effect of Mn concentration and growth temperature on nanostructures and magnetic properties of Ge1-xMnx grown on Si
Formatted title
Effect of Mn concentration and growth temperature on nanostructures and magnetic properties of Ge1-xMnx grown on Si
Journal name Journal of Crystal Growth   Check publisher's open access policy
ISSN 0022-0248
1873-5002
Publication date 2010-10-01
Sub-type Article (original research)
DOI 10.1016/j.jcrysgro.2010.07.008
Volume 312
Issue 20
Start page 3034
End page 3039
Total pages 6
Place of publication Amsterdam, Netherland
Publisher Elsevier
Collection year 2011
Language eng
Formatted abstract
The nanostructures and magnetic properties of Ge1-xMn x thin films grown on Si substrates by molecular beam epitaxy, with different nominal Mn concentrations (1-4%) and different growth temperatures, have been systematically investigated by transmission electron microscopy and superconducting quantum interference device. It was discovered that when Ge 1-xMnx thin films were grown at 70 °C, with increase in Mn concentration, Mn-rich tadpole shaped clusters started to nucleate at 1% Mn and become dominate in the entire film at 4% Mn. While for the thin films grown at 150 °C, tadpoles was firstly seen in the film with 1% Mn and subsequently Mn-rich secondary precipitates became dominant. The magnetic properties show specific features, which are mainly related to the nature and amount of Mn-rich clusters/precipitates within these thin films. © 2010 Elsevier B.V. All rights reserved.
Keyword Molecular beam epitaxy
Magnetic materials
Semiconducting germanium
Ferromagnetism
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
 
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Created: Sun, 31 Oct 2010, 10:07:40 EST