EPR study of preferential orientation of crystallites in N-doped high quality CVD diamond

Abstract

The directions of preferential growth of free-standing optical-quality CVD diamond wafers have been investigated with the help of electron paramagnetic resonance (EPR). EPR signals of the well-known P1 centre (substitutional nitrogen) have been used as a probe. A computer simulation of EPR spectra of preferentialty oriented polycrystalline material allows the estimation of the real orientation and spatial distribution of crystallographic axes of crystallites in the samples oriented preferentially in the [110] direction. (C) 2001 Elsevier Science B.V. All rights reserved.