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Proceedings Paper

Twin quintuplets in CVD diamond
Author(s): Dan Shechtman; Jerry L. Hutchison; Albert Feldman
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Paper Abstract

The atomic structure of twin quintuplets in a chemical vapor deposited (CVD) diamond film was investigated by high resolution transmission electron microscopy (HRTEM). We conclude that the twin quintuplets have two main morphologies. The first consists of four =3 twin boundaries and one =81 twin boundary. The =81 twin boundary contains the dislocations needed to accommodate a 7.35° misfit angle between a set of {1 1 1} planes on opposite sides of the boundary. In the second case, the 7.35° misfit angle is accommodated by two or more grain boundaries that are tilted slightly more than the 70.53° tilt of a =3 boundary. These grain boundaries and the conventional diamond lattice twin boundaries are the only types of boundaries that we have observed in CVD diamond.

Paper Details

Date Published: 20 November 1992
PDF: 6 pages
Proc. SPIE 1759, Diamond Optics V, (20 November 1992); doi: 10.1117/12.130763
Show Author Affiliations
Dan Shechtman, Technion--Israel Institute of Technology (Israel)
Jerry L. Hutchison, Univ. of Oxford (United States)
Albert Feldman, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 1759:
Diamond Optics V
Albert Feldman; Sandor Holly, Editor(s)

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