Raman and infrared investigations of glass and glass-ceramics with composition 2Na2O·1CaO·3SiO2

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.creatorZiemath, Ervino C. [UNESP]
dc.creatorAegerter, Michel A. [UNESP]
dc.date2014-05-27T11:17:55Z
dc.date2014-05-27T11:17:55Z
dc.date1994-01-01
dc.date.accessioned2023-09-12T07:50:06Z
dc.date.available2023-09-12T07:50:06Z
dc.identifierhttp://dx.doi.org/10.1557/JMR.1994.0216
dc.identifierJournal of Materials Research, v. 9, n. 1, p. 216-225, 1994.
dc.identifier0884-2914
dc.identifierhttp://hdl.handle.net/11449/132320
dc.identifier10.1557/JMR.1994.0216
dc.identifierWOS:A1994MW11100031
dc.identifier2-s2.0-0028336233
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8781599
dc.descriptionPrecursor 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.
dc.descriptionUniversidade Estadual Paulista, Rio Claro
dc.descriptionUniversidade Estadual Paulista, Rio Claro
dc.format216-225
dc.languageeng
dc.publisherMaterials Research Society
dc.relationJournal of Materials Research
dc.relation1.495
dc.relation0,610
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectAmorphous materials
dc.subjectBand structure
dc.subjectCeramic materials
dc.subjectCrystal orientation
dc.subjectCrystals
dc.subjectInfrared spectroscopy
dc.subjectMolecular structure
dc.subjectMolecular vibrations
dc.subjectRaman spectroscopy
dc.subjectScanning electron microscopy
dc.subjectSpectrum analysis
dc.subjectBending vibrations
dc.subjectGlass ceramics
dc.subjectGlass
dc.titleRaman and infrared investigations of glass and glass-ceramics with composition 2Na2O·1CaO·3SiO2
dc.typeArtigo


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