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Temperature Dependence of DC Conductivity in Ion-Beam-Irradiated Glassy Carbon

Published online by Cambridge University Press:  26 February 2011

Dougal McCulloch  and
Steven Prawer
Dougal McCulloch
Affiliation:
Department of Applied Physics and Microelectronics and Materials Research Center and Dipankar Sengupta, Department of Communications & Electrical Engineering, Royal Melbourne Institute of Technology, GPO Box 2476V, Melbourne, Victoria, 3001, Australia.
Steven Prawer
Affiliation:
Department of Applied Physics and Microelectronics and Materials Research Center and Dipankar Sengupta, Department of Communications & Electrical Engineering, Royal Melbourne Institute of Technology, GPO Box 2476V, Melbourne, Victoria, 3001, Australia.
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Abstract

The electrical conductivity of ion beam irradiated Glassy Carbon has been investigated in the temperature range 100 to 300 K. Ion species used were C+ and N+ with doses between 1014 and 1018 ions/cm2. Ion beam irradiation was found to lower the conductivity of Glassy Carbon by up to six orders of magnitude. The temperature dependence of the conductivity in ion beam modified Glassy Carbon has been measured. The functional dependence was found to remain largely unchanged by ion irradiation despite the large overall decrease in the conductivity. The results are interpreted in terms of a model which includes a variable range hopping and strongly scattering metallic components.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 201: Symposium A – Surface Chemistry and Beam-Solid Interactions , 1990 , 301
Copyright
Copyright © Materials Research Society 1991

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