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Structural Change of Graphite During Electron Irradiation

Published online by Cambridge University Press:  25 February 2011

J. Koike and
D. F. Pedraza
J. Koike
Affiliation:
Department of Mechanical Engineering, Oregon State University, Corvallis, OR 97331
D. F. Pedraza
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
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Abstract

Highly oriented pyrolytic graphite was irradiated at room temperature with 300-keV electrons. High resolution transmission electron microscopy and electron energy loss spectroscopy were employed to study the structure of electron-irradiated graphite. All the results obtained here consistently indicated die absence of long-range order periodicity in the basal plane and the loose retention of the c-axis periodicity. The structure was modeled based on a mixture of sixfold and non-sixfold atom rings. The formation of non-sixfold atom rings was related to the observed buckling and discontinuity of the original graphite basal plane.

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References

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