Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4878
PIRA download icon_1.1View/Download Full Text
Title: Magnetoresistivity of cobalt-polytetrafluoroethylene granular composites
Authors: Kwong, HYA
Wong, MH
Wong, YW
Wong, KH
Issue Date: 23-Oct-2006
Source: Applied physics letters, 23 Oct. 2006, v. 89, no. 17, 173109, p. 1-3
Abstract: Giant magnetoresistance (GMR) was observed in a heterogeneous granular film with polymer matrix. Cobalt and polytetrafluoroethylene (PTFE) were deposited on glass substrates by using the pulsed laser deposition technique. IR absorption spectra of the deposited PTFE showed similar characteristics with the bulk PTFE. The granular samples exhibit a resistance change of about 5% (at 10 kOe) at room temperature. The temperature dependence of resistance of the samples shows that charge transportation is mainly due to tunneling between the metal particles. The GMR can thus be interpreted by the spin-dependent electrons tunneling through the ferromagnetic metal granules (cobalt) in the insulating matrix (PTFE).
Keywords: Filled polymers
Granular materials
Giant magnetoresistance
Magnetic thin films
Pulsed laser deposition
Infrared spectra
Tunnelling
Cobalt
Ferromagnetic materials
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2364270
Rights: © 2006 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 et al., Appl. Phys. Lett. 89, 173109 (2006) and may be found at http://link.aip.org/link/?apl/89/173109
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Kwong_Magnetoresistivity_Granular_Composites.pdf150.94 kBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

95
Last Week
1
Last month
Citations as of Jun 4, 2023

Downloads

178
Citations as of Jun 4, 2023

SCOPUSTM   
Citations

9
Last Week
0
Last month
0
Citations as of Jun 2, 2023

WEB OF SCIENCETM
Citations

9
Last Week
0
Last month
0
Citations as of Jun 1, 2023

Google ScholarTM

Check

Altmetric


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