Change of luminescence character of Ib diamonds with HPHT treatment

Authors
Citation
H. Kanda et X. Jia, Change of luminescence character of Ib diamonds with HPHT treatment, DIAM RELAT, 10(9-10), 2001, pp. 1665-1669
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
DIAMOND AND RELATED MATERIALS
ISSN journal
0925-9635 → ACNP
Volume
10
Issue
9-10
Year of publication
2001
Pages
1665 - 1669
Database
ISI
SICI code
0925-9635(200109/10)10:9-10<1665:COLCOI>2.0.ZU;2-J
Abstract
Type Ib high pressure synthetic diamonds have been examined using photo- an d cathodo-luminescence topography and spectroscopy before and after heat tr eatment. The type Ib crystals were grown from Fe instead of Ni and Co in or der to avoid influence of Ni and Co luminescence centers. The crystal exhib ited the 389-nm band and a broad band with a maximum around 550 nm as well as additional weak peaks at 485 and 535 nm. With annealing at 1800 degreesC and 6 GPa, the peaks were annealed out and the N3, H3 and 575-nm bands app eared instead. The H3 and 575-nm bands were stronger in {113} sectors than in {111}, whereas the N3 band was weaker in the (113) sectors. (C) 2001 Els evier Science B.V. All rights reserved.