Investigation of large molecular fragments in glassy Ge1−x(Se, or S)x

Murase, K.; Fukunaga, T.; Tanaka, Yoïchi; Yakushiji, Kazuyuki; Yunoki, Isamu

doi:10.1016/0378-4363(83)90707-6

Cited by 16 publications

(8 citation statements)

References 9 publications

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“…The shoulder at around 300 cm À1 has been assigned to the E modes of SbS 3/2 pyramids. In agreement with [11][12][13][14][15], the bands at 330 and 400 cm À1 have been assigned to the A 1 and T 2 modes of corner-sharing GeS 4/2 groups with a smaller contribution of the n 1 (A 1 ) mode of AsS 3/2 pyramids (observed at 344 cm À1 for As 2 S 3 glass [13][14][15][16]). The bands at 340, 375 and 420 cm À1 have been attributed, respectively to A 1 mode of the GeS 4 molecular units, to the T 2 mode of 2 edge-sharing Ge 2 S 4 S 2/2 tetrahedra and to the vibration of two tetrahedral connected through a bridging sulfur S 3 Ge-S-GeS 3 .…”

Section: Effect Of Oxygen Introduction On the Structure Of Gallium-frsupporting

confidence: 74%

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Processing and characterization of new oxysulfide glasses in the Ge–Ga–As–S–O system

Maurel¹,

Petit²,

Dussauze³

et al. 2008

Journal of Solid State Chemistry

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Section: Effect Of Oxygen Introduction On the Structure Of Gallium-frsupporting

confidence: 74%

“…475 cm À1 may be attributed to the S 8 (A 1 ) ring vibration mode and at 485 cm À1 to vibration mode of S(A 1 ) chain. [11][12][13][14]. The frequencies and the corresponding assignments are summarized in Table 2.…”

Section: Effect Of Oxygen Introduction On the Structure Of Gallium-frmentioning

confidence: 99%

Processing and characterization of new oxysulfide glasses in the Ge–Ga–As–S–O system

Maurel¹,

Petit²,

Dussauze³

et al. 2008

Journal of Solid State Chemistry

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“…This may be because there is a partial substitution of oxygen for sulphur in the tetrahedral units, or there is a different environment for the tetrahedral units in the reorganized networks that are formed after laser illumination. In Raman spectra of glassy GeO 2 , there are two characteristic features: an intense peak at 400 cm −1 and its broad tail extending to 650 cm −1 [31]. In the spectrum at 21 min in Fig.…”

Section: Resultsmentioning

confidence: 89%

Oxygen‐assisted photoinduced structural transformation in amorphous Ge–S films

Sakaguchi

Ténné

Mitkova

2009

Physica Status Solidi (b)

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We report our results of continuous illumination of Ge46S54 chalcogenide glass films with bandgap light in air. The outcome of this process is the formation of Ge–S backbone depleted in germanium. We relate this to consumption of some of the germanium available in the initial material due to the occurrence of a photoinduced oxidation. This is proved using energy dispersion spectroscopy which shows the presence of 17.68 at.% oxygen in the glass post‐radiation. Raman spectra demonstrate that the initial material shows breathing modes, characteristic for Ge46S54 glass. After prolonged illumination Raman spectra reveal structure characteristic for the composition of the Ge–S backbone close to Ge33S67. The oxide forms a film on the surface and this changes the surface relief, studied by atomic force microscopy, but the oxidation is not surface‐limited. The oxidation process in these glasses is discussed and the higher priority of germanium oxidation compared to the oxidation of sulphur is stated.

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“…16) The peak at 432 cm |1 is assigned to a SS stretching due to the edge dimmers of an aGeS 2 like cluster. 17) …”

Section: Densities and Molar Volumes Of Gesbs Glassesmentioning

confidence: 99%