Formation of semiconductor nanostructures by dense electronic excitation
by Y. Batra, D. Kanjilal
International Journal of Nanotechnology (IJNT), Vol. 6, No. 5/6, 2009

Abstract: Formation of controlled semiconductor nanostructures on and near the surface region using dense electronic excitation produced by high energy heavy ions has been reviewed. Various parameters of the energetic ion beams such as energy, species and beam current can be controlled to have desired size. Results of new initiatives on production of Ge nanostructures of desired size by high-energy heavy ions are discussed. GeO_x films were irradiated by 100 MeV gold (Au) ions. Formation of Ge nanostructures was studied by various techniques like micro Raman, Fourier transform infrared spectroscopy (FTIR), glancing incident X-ray diffraction (GIXRD), transmission electron microscopy (TEM), high resolution electron microscopy (HREM), atomic force microscopy (AFM), elastic recoil detection analysis (ERDA), magnetic force microscopy (MFM) and magnetisation measurements. Development of Ge nanostructures is explained on the basis of phase separation of GeO_x and controlled crystallisation of Ge in the nanometre scale taking place around the trajectory of the swift heavy ion. Nanostructures are formed in a controlled manner by dense electronic excitation due to melting and subsequent fast cooling of the region along the trajectories of the energetic ions.

Online publication date: Mon, 13-Apr-2009

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com