The Effect of Extrinsic Defects in Pyrolytic Graphite on the a-Axis Resistivity

A contactless radiofrequency technique was used. Measurements were at room temperature. The relative damage induced in highly-oriented material by different cutting techniques--razor, wire saw, air abrasion--was investigated. Subtle delamination occurs during cutting which leads to materials of less...

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Bibliographic Details
Published in:Journal of materials science 1978-05, Vol.12 (5), p.1114-1118
Main Authors: Zeller, C, Foley, G M T, Vogel, F L
Format: Article
Language:English
Online Access:Get full text
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Summary:A contactless radiofrequency technique was used. Measurements were at room temperature. The relative damage induced in highly-oriented material by different cutting techniques--razor, wire saw, air abrasion--was investigated. Subtle delamination occurs during cutting which leads to materials of less than ideal density, and additional basal-plane defects occurred in razor-cut samples. The measured minimum resistivity was (38 + 1) x 10-6 ohm.cm for all three techniques. For intercalation studies starting material with an alpha outside the range 0.8-11 should be rejected. 25 ref.--EPAA/AF.
ISSN:0022-2461