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The Apex Structure of Co-Produced Helical Boron Nitride and Carbon Cones

Published online by Cambridge University Press:  02 July 2020

L Bourgeois ,
Y. Bando ,
K. Kurashima  and
T. Sato
L Bourgeois
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki305-0044, Japan
Y. Bando
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki305-0044, Japan
K. Kurashima
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki305-0044, Japan
T. Sato
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1-1, Tsukuba, Ibaraki305-0044, Japan
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Extract

Conical whiskers of layered compounds such as graphite and hexagonal boron nitride (h-BN)2 are interesting materials because their conical morphology results from the introduction of a local topological defect at the cone apex. In the honeycomb array characteristic of graphite and h-BN basal planes, this topological defect is thought to be a non-hexagonal ring (e.g. a pentagon or a square). These defects are known to form the basis of curved nanostructures like fullerenes and buckytubes. Therefore a comparison of their occurrence in two systems known to harbour nanostructures is worthy of study.

The defect structure at the apex of co-produced carbon and boron nitride whiskers was investigated by analytical transmission electron microscopy (TEM). The instrument used was a field-emission JEM3000F high-resolution electron microscope, equipped with a parallel electron energy loss spectrometer (EELS).

Type
Future of Microscopy: Ceramics, Composites, and Cement
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 816 - 817
Copyright
Copyright © Microscopy Society of America

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References

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