Weak phonon modes observation using infrared reflectivity for 4H, 6H and 15R polytypes

Authors
Bluet, JM Chourou, K Anikin, M Madar, R
Citation
Jm. Bluet et al., Weak phonon modes observation using infrared reflectivity for 4H, 6H and 15R polytypes, MAT SCI E B, 61-2, 1999, pp. 212-216
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
61-2
Year of publication
1999
Pages
212 - 216
Database
ISI
SICI code
0921-5107(19990730)61-2:<212:WPMOUI>2.0.ZU;2-K
Abstract
Infrared reflectivity is investigated as a useful tool for SIC polytype ide ntification. The oscillator parameters (energy, oscillator strength and dam ping) of the weak folded modes, arising from the folding of the axial optic branch, are determined in the cases of 4H. 6H and 15R polytypes. An exampl e of polytype identification for a sample showing polytype conversion durin g SIC crystal growth observed in IR spectroscopy is given. (C) 1999 Elsevie r Science S.A. All rights reserved.