Raman spectra of gallium sulfide based glasses

Tverjanovich, A. S.; Tver’yanovich, Yu. S.; Loheider, S.

doi:10.1016/s0022-3093(96)00415-2

Cited by 82 publications

(62 citation statements)

References 12 publications

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“…Simultaneous existence of a small amount of M-M and S-S bonds was reported indicating some chemical disorder [37,39,41]. Triply coordinated S atoms were found by Masselin et al [44].…”

Section: Introductionmentioning

confidence: 90%

“…These works also use several different methods such as Raman [12,[36][37][38][39], XAFS [40], neutron diffraction [41], EXAFS [42], XRD and Raman [43], 2D micro-Raman [44]. They have all found that Ge and Ga atoms are equally fourfold coordinated, [GaS 4 ] and [GeS 4 ] tetrahedral units are cross-linked via bridging sulfur atoms, M-chalcogen bonds are preferable.…”

Section: Introductionmentioning

confidence: 99%

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Local motifs in GeS2–Ga2S3 glasses

Pethes

Nazabal

Chahal

et al. 2016

Journal of Alloys and Compounds

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The structure of (GeS 2 ) 0.75 (Ga 2 S 3 ) 0.25 and (GeS 2 ) 0.83 (Ga 2 S 3 ) 0.17 glasses was investigated by Raman scattering, high energy X-ray diffraction and extended X-ray absorption fine structure (EXAFS) measurements at the Ga and Ge K-edges. The reverse Monte Carlo simulation technique (RMC) was used to obtain structural models compatible with diffraction and EXAFS datasets. It was found that the coordination number of Ga is close to four. While Ge atoms have only S neighbors, Ga binds to S as well as to Ga atoms showing a violation of chemical ordering in GeS 2 -Ga 2 S 3 glasses. Analysis of the corner-and edge-sharing between [GeS 4/2 ] units revealed that about 30% of germanium atoms participate in the edge-shared tetrahedra.

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“…Simultaneous existence of a small amount of M-M and S-S bonds was reported indicating some chemical disorder [37,39,41]. Triply coordinated S atoms were found by Masselin et al [44].…”

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Local motifs in GeS2–Ga2S3 glasses

Pethes

Nazabal

Chahal

et al. 2016

Journal of Alloys and Compounds

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“…However, two-subshell fittings using both Ga-S and Ga-Br pairs had to be attempted for glasses with CsBr. To decrease the number of free variables, the total coordination number around the Ga was fixed at four, based on the well-known nature of Ga coordination [16]. Results of the curve-fitting in Table 2 show that Ga ions were surrounded by four sulfurs in Ge 0.25 Ga 0.10 S 0.65 glass.…”

Section: Ga K-edge Spectramentioning

confidence: 99%

“…According to the coordination numbers shown in Table 2, Br ions are distributed evenly among Ga tetrahedra. Each Ga tetrahedra is made of three S and one Br ion bonded to Ga. Shin et al [4,5] and Tveryanovich et al [16] also proposed the formation of [GaS 3/2 Br(or Cl)] À tetrahedral units in GeS 2 -Ga 2 S 3 -CsBr(or Cl) glasses from analysis of their Raman spectra. Cs + ions are located near the [GaS 3/2 Br] À units as charge compensators.…”

Section: Structure Of Ge-ga-s-csbr Glassmentioning

confidence: 99%

Ge and Ga K-edge EXAFS analyses on the structure of Ge–Ga–S–CsBr glasses

Song

Choi

Heo

2006

Journal of Non-Crystalline Solids

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“…The structure of these pseudobinary glasses has been widely investigated and literature proposes corner-and edge-shared Ge(Ga)S 4 tetrahedra, ethane-like S 3 Ga-GaS 3 units connected by bridging sulfur, and more recently [Ge(Ga)S 1/3 S 3/p ] 3 , (p ¼2, 3) triclusters [1][2][3]. Even this pseudobinary system is already interesting thanks to its intrinsic properties, it is more pleasing because of the large possibility to be doped for optical or conductivity applications.…”

Section: Introductionmentioning

confidence: 99%

Influence of NaX (X=I or Cl) additions on GeS2–Ga2S3 based glasses

Bréhault¹,

Cozic²,

Boidin³

et al. 2014

Journal of Solid State Chemistry

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a b s t r a c tChalcogenide glasses in the pseudo-ternary system NaX-GeS 2 -Ga 2 S 3 (X¼ Cl or I) were synthesized. Different series were investigated in order to highlight the influence of the sodium halide addition on two different host glasses (GeS 2 ) 80 (Ga 2 S 3 ) 20 and (GeS 2 ) 72 (Ga 2 S 3 ) 28 . Macroscopic properties including density and characteristic temperatures, such as glass transition temperatures T g and crystallization temperature T x , were determined for a maximum molar content of NaX equal to 15%. The evolution of the optical band-gap and the chemical stability following the composition were also studied. Conductivity measurements were also performed and compared to other Li-based GeS 2 -Ga 2 S 3 glasses. The results were discussed taking into account the cation and anion nature and also the glass packing density.

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Raman spectra of gallium sulfide based glasses

Cited by 82 publications

References 12 publications

Local motifs in GeS2–Ga2S3 glasses

Local motifs in GeS2–Ga2S3 glasses

Ge and Ga K-edge EXAFS analyses on the structure of Ge–Ga–S–CsBr glasses

Influence of NaX (X=I or Cl) additions on GeS2–Ga2S3 based glasses

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