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Proof of the thermodynamical stability of the E' center in SiO2.
MedLine Citation:
PMID:  11290108     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The E' center is a paradigmatic radiation-induced defect in SiO2 whose peculiar EPR and hyperfine activity has been known for over 40 years. This center has been traditionally identified with a distorted, positively charged oxygen vacancy V(+)O. However, no direct proof of the stability of this defect has ever been provided, so that its identification is still largely incomplete. Here we prove directly that distorted V(+)O is metastable and that it satisfies the key requirements for its identification as E', such as thermal and optical response, and activation-deactivation mechanisms.
Authors:
C M Carbonaro; V Fiorentini; F Bernardini
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Physical review letters     Volume:  86     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2001 Apr 
Date Detail:
Created Date:  2001-04-06     Completed Date:  2001-05-24     Revised Date:  2003-10-31    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3064-7     Citation Subset:  -    
Affiliation:
INFM and Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato, CA, Italy.
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