DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4319

Title: Effect of annealing on the magnetic properties of Gd focused ion beam implanted GaN
Authors: KHADERBAD, MA
DHAR, S
PEREZ, L
PLOOG, KH
MELNIKOV, A
WIECK, AD
Keywords: native defects
Issue Date: 2007
Publisher: AMER INST PHYSICS
Citation: APPLIED PHYSICS LETTERS, 91(7), -
Abstract: The authors have studied the effect of annealing on the magnetic and the structural properties of Gd focused ion beam implanted GaN samples. Molecular beam epitaxy grown GaN layers, which were implanted with 300 keV Gd3+ ions at room temperature at doses 2.4x10(11) and 1.0x10(15) cm(-2), are rapid thermally annealed in flowing N-2 gas up to 900 degrees C for 30 s. X-ray diffraction results indicate the presence of Ga and N interstitials in the implanted layers. Their densities are also found to reduce upon annealing. At the same time, magnetic measurements on these samples clearly show a reduction in the saturation magnetization as a result of the annealing for the lowest Gd incorporated sample, while in the highest Gd incorporated sample it does not change. These findings suggest that Gd might be inducing magnetic moment in Ga and/or N interstitials in giving rise to an effective colossal magnetic moment of Gd and the associated ferromagnetism observed in Gd:GaN. (C) 2007
URI: http://dx.doi.org/10.1063/1.2770762
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4319
http://hdl.handle.net/10054/4319
ISSN: 0003-6951
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback