Publication
Title
Multifrequency ESR characterization of paramagnetic point defects in semiconducting cubic BN crystals
Author
Abstract
Low-frequency (X-band) electron spin resonance (ESR) investigations on commercially available large-grained cubic boron nitride (cBN) superabrasive powders of various coloration, combined with high-frequency (W-band) ESR measurements on oriented submillimeter-size single crystallites selected from the same powder samples, resulted in a clear identification of several types of paramagnetic point defects. The resulting spin Hamiltonian parameters describing the ESR spectra observed in the 3293 K temperature range and the photosensitivity of the paramagnetic defects observed in amber-colored cBN samples are reported. It is shown that the nature of the paramagnetic centers depends on the color of the investigated samples and that, in many cases, uncontrolled impurities seem to be involved in their structure.
Language
English
Source (journal)
Applied magnetic resonance. - Stuttgart
Publication
Stuttgart : 2010
ISSN
0937-9347
Volume/pages
39:1/2(2010), p. 1-15
ISI
000282316200005
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 17.01.2011
Last edited 05.08.2017
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