Formation of defect clusters in electron-irradiated diamond at 16 and 87 K

J. Koike; T. E. Mitchell; D. M. Parkin

doi:10.1063/1.105938

Formation of defect clusters in electron-irradiated diamond at 16 and 87 K

J. Koike, T. E. Mitchell, D. M. Parkin

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

A type IIa natural diamond was irradiated with 300 kV electrons at 16 and 87 K. Transmission electron microscopy and electron energy-loss spectroscopy were employed to investigate the phase stability of diamond under electron irradiation. At both temperatures, the diamond structure was found to be stable, and the formation of defect clusters was observed. The present results in comparison to previous work on ion implantation indicate that displacement cascade damage is a prerequisite for irradiation-induced phase transformation from diamond to amorphous carbon or graphite. The temperature dependence of the cluster size suggests that interstitials are thermally mobile above 50 K.

Original language	English
Pages (from-to)	2515-2517
Number of pages	3
Journal	Applied Physics Letters
Volume	59
Issue number	20
DOIs	https://doi.org/10.1063/1.105938
Publication status	Published - 1991 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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AB - A type IIa natural diamond was irradiated with 300 kV electrons at 16 and 87 K. Transmission electron microscopy and electron energy-loss spectroscopy were employed to investigate the phase stability of diamond under electron irradiation. At both temperatures, the diamond structure was found to be stable, and the formation of defect clusters was observed. The present results in comparison to previous work on ion implantation indicate that displacement cascade damage is a prerequisite for irradiation-induced phase transformation from diamond to amorphous carbon or graphite. The temperature dependence of the cluster size suggests that interstitials are thermally mobile above 50 K.

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