20 November 1992 Twin quintuplets in CVD diamond
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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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dan Shechtman, Jerry L. Hutchison, Albert Feldman, "Twin quintuplets in CVD diamond", Proc. SPIE 1759, Diamond Optics V, (20 November 1992); doi: 10.1117/12.130763; https://doi.org/10.1117/12.130763

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