Abstract
Attempts were made to produce bands of hexagonal diamond (Lonsdaleite) by high-temperature indentation of cubic diamond. (011) wafers of type I diamond were indented over the temperature range 1000–1300°C and the microstructure of the indentation plastic zone investigated by transmission electron microscopy (TEM). No hexagonal diamond was produced; instead, the plastic zone consisted of arrays of \({1 \over 2} < 110 > \) dislocations lying on the {001} planes. A possible mechanism for the generation of such dislocations, and reasons for the absence of hexagonal diamond, are discussed.
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Pirouz, P., Garg, A., Ning, X.J. et al. High-Temperature Indentation of Natural Diamond and the Quest for Lonsdaleite. MRS Online Proceedings Library 383, 73–83 (1995). https://doi.org/10.1557/PROC-383-73
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DOI: https://doi.org/10.1557/PROC-383-73