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Internal friction of SiO2 glasses with excessive and deficient oxygen
- Source :
- Physica B: Condensed Matter. :276-278
- Publication Year :
- 1996
- Publisher :
- Elsevier BV, 1996.
-
Abstract
- The lack of stoichiometry in SiO2 glass causes optical absorption, luminescence and so on. The internal friction of SiO2 glasses with excessive and deficient oxygen was measured in the temperature range of 1.6–250 K. At 35 K excessive oxygen enhanced the intensity of the internal friction of the glass, and deficient oxygen reduced this intensity. These changes of internal friction are analyzed by the bending model related to bridging oxygens in SiOSi bonds. Densitues of both the excessive and deficient oxygen are in the order of 1017/cm3. It is supposed tha the changes in Young's modulus of these glasses are due to the OH contents.
- Subjects :
- Materials science
Modulus
chemistry.chemical_element
Bending
Atmospheric temperature range
Condensed Matter Physics
Oxygen
Electronic, Optical and Magnetic Materials
chemistry
Electrical and Electronic Engineering
Composite material
Luminescence
Absorption (electromagnetic radiation)
Intensity (heat transfer)
Stoichiometry
Subjects
Details
- ISSN :
- 09214526
- Database :
- OpenAIRE
- Journal :
- Physica B: Condensed Matter
- Accession number :
- edsair.doi...........14de55186ced7b95eb75d8217615d963