Magnetic resonance and optical study of carbonized silica obtained bypyrolysis of surface compounds
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00427211" target="_blank" >RIV/68378271:_____/14:00427211 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.854.99" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.854.99</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.854.99" target="_blank" >10.4028/www.scientific.net/AMR.854.99</a>
Alternative languages
Result language
angličtina
Original language name
Magnetic resonance and optical study of carbonized silica obtained bypyrolysis of surface compounds
Original language description
The carbonized silica (SiO2:C) nanopowders were prepared by chemical modification of fumed silica (aerosil) by phenyltrimethoxysilane followed by thermal annealing at temperature in range of 500-800 °C in nitrogen flow. Their magnetic properties were investigated by electron paramagnetic resonance (EPR) in the temperature range from 4.2 K to 292 K. The initial and annealed SiO2:C samples revealed carbon (C) related defects. The carbon related radicals (CRR) in annealed SiO2:C nanopowders with g-factors2.0042, 2.0039 were attributed to the oxygen (O)- centered CRR and C-centered CRR with a nearby O heteroatom, respectively. The EPR data were compared with infrared (IR) and photoluminescence (PL) data. It was found that the position of the PL band depends on the type of CRR formed after sample annealing. The PL with maximum intensity at 440 nm was found for the sample annealed at 500°C in which O-centered CRR was observed while in the sample anneal....
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LM2011029" target="_blank" >LM2011029: SAFMAT - Centre of Functional Materials Analyses</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Functional Nanomaterials and Devices VII
ISBN
9783037859421
ISSN
1022-6680
e-ISSN
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Number of pages
6
Pages from-to
99-104
Publisher name
Trans Tech Publications
Place of publication
Zurich
Event location
Kyiv
Event date
Apr 8, 2013
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000336634400013