Kumari, Latha and Subramanyam, SV and Eto, S and Takai, K and Enoki, T (2004) Metal-Insulator transition in iodinated amorphous conducting carbon films. In: Carbon, 42 (11). pp. 2133-2137.
In this work, the effect of iodine incorporation on the electrical conductivity, magnetic susceptibility (\chi) and magnetoresistance (MR) of amorphous conducting carbon (a-C) films has been discussed. Variation in conductivity of a-C films depends on the sample preparation conditions and iodine concentration. Evidence of metal-insulator (M-I) transition as a function of pyrolysis temperature is observed for iodinated (a-C:I) samples. The temperature dependent magnetic susceptibility of a-C:I sample shows a Curie behavior at low temperatures. The positive magnetoresistance is observed for all the samples irrespective of the conduction regimes. This is accounted by the electron-electron interaction in the a-C:I system.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Elsevier Science.|
|Keywords:||Carbon films;Intercalation;Pyrolysis;Transport properties|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||03 Dec 2004|
|Last Modified:||19 Sep 2010 04:17|
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