Please use this identifier to cite or link to this item:
doi:10.22028/D291-24169
Title: | Raman and infrared investigations of glass and glass-ceramics with composition 2Na2O·1CaO·3SiO2 |
Author(s): | Ziemath, Ervino C. Aegerter, Michel A. |
Language: | English |
Year of Publication: | 1994 |
OPUS Source: | Journal of materials research. - 9. 1994, 1, S. 216-225 |
SWD key words: | Präkursor Ausgangsmaterial Biologisches Material Raman-Spektrum |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | Precursor glass and glass-ceramics with molar composition 2Na2O·1CaO·3SiO2 are studied by infrared, conventional, and microprobe Raman techniques. The Gaussian deconvoluted Raman spectrum of the glass presents bands at 625 and 660 cm-1, attributed to bending vibrations of Si-O-Si bonds, and at 860, 920, 975 and 1030 cm-1, attributed to symmetric stretching vibrations of SiO4 tetrahedra with 4, 3, 2, and 1 nonbridging oxygens, respectively. The Raman microprobe spectrum of a highly crystallized sample presents two narrow and intense bands at about 590 and 980 cm-1, associated with vibrations of SiO4 tetrahedra with two nonbridging oxygens, in agreement with the predicted chain-like structure of crystalline metasilicates. Scanning electron microscopy shows that the crystals distributed in partially crystallized samples have a spherical shape, built up by radially oriented needle-like single crystals. The Raman microprobe spectra of these spherulites show that they still contain residual amorphous material. A comparison of Raman and infrared spectra of amorphous and highly crystallized samples is presented. |
Link to this record: | urn:nbn:de:bsz:291-scidok-23513 hdl:20.500.11880/24225 http://dx.doi.org/10.22028/D291-24169 |
Date of registration: | 4-Sep-2009 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - INM Leibniz-Institut für Neue Materialien |
Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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AEG224.pdf | 3,58 MB | Adobe PDF | View/Open |
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