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Vibrational Spectroscopy of Boron Nitride at High Temperatures and Pressures

Published online by Cambridge University Press:  26 February 2011

Gregory Y. Exarhos  and
Nancy J. Hess
Gregory Y. Exarhos
Affiliation:
Pacific Northwest Laboratory, Richland, Washington 99352
Nancy J. Hess
Affiliation:
Mineral Physics Group, Department of Geology, University of Washington, Seattle, Washington 98195
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Abstract

Raman scattering measurements are used to distinguish between amorphous and crystalline phases in sputter deposited boron nitride coatings and bulk materials. Changes in vibrational line frequency and linewidth can be attributed to differences in particle size or inherent strain which can be quantified from pressure-dependent measurements of the bulk material. The response of the Raman-allowed E2g modes (hexagonal phase) to temperature is described by a forced dampeg harmonic oscillator model from which the intra- and interplanar lattice thermal expansion can be estimated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 162: Symposium F – Diamond, Silicon Carbide and Related Wide Bandgap Semiconductors , 1989 , 561
Copyright
Copyright © Materials Research Society 1990

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References

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