Twin quintuplets in CVD diamond

Dan Shechtman; Jerry L. Hutchison; Albert Feldman

doi:10.1117/12.130763

20 November 1992 Twin quintuplets in CVD diamond

Dan Shechtman, Jerry L. Hutchison, Albert Feldman

Proceedings Volume 1759, Diamond Optics V; (1992) https://doi.org/10.1117/12.130763
Event: San Diego '92, 1992, San Diego, CA, United States

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.

Citation Download Citation

Dan Shechtman, Jerry L. Hutchison, and Albert Feldman "Twin quintuplets in CVD diamond", Proc. SPIE 1759, Diamond Optics V, (20 November 1992); https://doi.org/10.1117/12.130763

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