Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4220
Title: Temperature dependence of magnetoresistivity of cobalt-polytetrafluoroethylene granular composite films
Authors: Kwong, HYA
Wong, YW
Wong, KH
Keywords: Cobalt
Enhanced magnetoresistance
Ferromagnetic materials
Filled polymers
Granular materials
Magnetic moments
Magnetic relaxation
Pulsed laser deposition
Thin films
Tunnelling
Issue Date: 1-Dec-2007
Publisher: American Institute of Physics
Source: Journal of applied physics, 1 Dec. 2007, v. 102, no. 11, 114303, p. 1-4 How to cite?
Journal: Journal of applied physics 
Abstract: Heterogeneous granular films consisting of ferromagnetic cobalt particles embedded in a polytetrafluoroethylene polymer matrix were fabricated by the pulsed laser deposition technique carried out with a Nd-doped yttrium aluminum garnet laser at 355 nm. The samples exhibit a magnetoresistance (MR) change of 4% (at 8 kOe) at room temperature. An enhancement of MR to a value of 6% was observed at 20 K which is attributed to the increasing order of magnetic moments in the ferromagnetic state at low temperature. Significant loop opening of the MR profile at low temperature and the temperature dependence of MR reveal the interplay of superparamagnetic relaxation behavior and spin-dependent electron tunneling.
URI: http://hdl.handle.net/10397/4220
ISSN: 0021-8979 (print)
1089-7550 (online)
DOI: 10.1063/1.2821240
Rights: © 2007 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 H. Y. Kwong, Y. W. Wong & K. H. Wong, J. Appl. Phys. 102, 114303 (2007) and may be found at http://link.aip.org/link/?jap/102/114303.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Kwong_Temperature_dependence_magnetoresistivity.pdf448.4 kBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

6
Last Week
0
Last month
0
Citations as of May 20, 2016

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
0
Citations as of May 18, 2016

Page view(s)

253
Last Week
4
Last month
Checked on May 22, 2016

Download(s)

305
Checked on May 22, 2016

Google ScholarTM

Check

Altmetric



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