University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Irradiation enhanced paramagnetism on graphene nanoflakes

Ney, A, Papakonstantinou, P, Kumar, A, Shang, N-G and Peng, N (2011) Irradiation enhanced paramagnetism on graphene nanoflakes Applied Physics Letters, 99 (10). ISSN 0003-6951

[img]
Preview
PDF
Ney2011-APL.pdf - Published Version
Available under License : See the attached licence file.

Download (1MB)
[img] Plain Text (licence)
licence.txt

Download (1kB)

Abstract

We have studied the magnetization of vertically aligned graphene nanoflakes irradiated with nitrogen ions of 100 KeV energy and doses in the range 10¹¹–10¹⁷ ions/cm². The non-irradiated graphene nanoflakes show a paramagnetic contribution, which is increased progressively by ion irradiation at low doses up to 10¹⁵/cm². However, further increase on implantation dose reduces the magnetic moment which coincides with the onset of amorphization as verified by both Raman and x-ray photoelectron spectroscopic data. Overall, our results demonstrate the absence of ferromagnetism on either implanted or unimplanted samples from room temperature down to a temperature of 5 K.

Item Type: Article
Additional Information:

Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

The following article appeared in Applied Physics Letters, 99 (10) 102504 and may be found at A. Ney et al., Appl. Phys.Lett. 99, 102504 (2011)

Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Ion Beam Centre
Depositing User: Symplectic Elements
Date Deposited: 07 Dec 2011 15:31
Last Modified: 23 Sep 2013 18:52
URI: http://epubs.surrey.ac.uk/id/eprint/7864

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800