Short, intermediate and mesoscopic range order in sulfur-rich binary glasses

Бычков, Е.; Miloshova, Mariana; Price, David L.; Benmore, C. J.; Lorriaux, A.

doi:10.1016/j.jnoncrysol.2005.11.002

Cited by 72 publications

(123 citation statements)

References 21 publications

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“…The value 2.26 Å for Geenriched samples (x = 24, 32, and 36) is consistent with 2.21-2.24 Å distances corresponding to S Ge  first neighbors in the germanium sulphide glasses [32] and with 2.24-2.27 Å distances corresponding to S Ge  first neighbors in the mixed germanium-arsenic sulphide glasses [23,24], as well as the value 2.27 Å for Asenriched sample (x = 16) is consistent with 2.27-2.30 Å distances corresponding to S As  first neighbors in the arsenic trisulphide glass [20,[33][34][35] and with 2.17-2.27 Å distances corresponding to S As  first neighbors in the mixed As Ge  sulphide glasses [23,24]. AsAs (2.43-2.53 Å [23,24,32]), Ge Ge  (2.46 Å [36]) and S S  (2.0-2.04 Å [23,32]) neighbor correlations (if exist) cannot be resolved on the pair distribution functions as they can simply be covered by the peak from S Ge  or S As  contributions. Besides, like for glasses.…”

Section: S As Gesupporting

confidence: 79%

“…As the changes in the FSDP are very small for Ge 24 As 16 S 60 (x = 24) and invisible for Ge 32 As 8 S 60 (x = 32) and Ge 36 As 4 S 60 (x = 36), one may assume that the radiation-induced defects with the density 1% are probably not formed for the Ge-enriched glasses studied with dominant S Ge  correlations. In other words, we may conclude that the radiation/annealing-induced structural changes on the medium-range order scale for the 60 …”

Section: S As Gementioning

confidence: 95%

“…In family, Kakinuma et al [37] attributed the peak at 3.61 Å to the secondary partial correlations Ge Ge  , Sb Ge  , Sb Sb  , and S S  . The structural study of S Ge  glasses [32] shows that the broad peak at ~3.6 Å corresponds to the second S S  and Ge Ge  correlations in the corner-shared GeS 4 tetrahedra ( 4…”

Section: S As Gementioning

confidence: 99%

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Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

Kavetskyy¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Local atomic structure of Ge x As 40x S 60 glasses (x = 16, 24, 32, and 36) has been investigated in the -irradiated (2.41 MGy dose) and annealed after -irradiation states by using the high-energy synchrotron X-ray diffraction technique. The accumulated dose of 2.41 MGy is chosen to be close to the known in literature focal point (2.0 MGy) for the system tested, at which the -irradiation-induced optical (darkening) effect does not depend on the composition. It is established that the first sharp diffraction peak (FSDP) is located at around 1 Е 1 . 1  in the structure factors S(Q) of all the alloys studied. The FSDP position is found to be constant on radiation/annealing treatment, but the intensity of the FSDP reveals changes under irradiation/annealing only for the compositions with x = 16 and 24. The radiation/annealing-induced changes are also observed on the pair distribution functions in the first and second coordination shells for these compounds. Practically invisible effects on the FSDP and pair distribution functions are found for the alloys with x = 32 and 36. The radiation/annealing-induced structural changes detected mainly in the S As  sub-system of the glasses examined are well explainable within the Tanaka approach for interpretation of the photo-induced structural changes and related phenomena in As 2 S 3 chalcogenide glass and similar materials.

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Section: S As Gesupporting

confidence: 79%

Section: S As Gementioning

confidence: 95%

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Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

Kavetskyy¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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“…This is somewhat smaller than the value of ͱ 8 / 3 = 1.63 for perfect tetrahedra, which can be a result of GeS 4/2 unit deformation ͑probably by increasing concentration in Ge-Ge bonding 30 ͒. It should also be noted here that the structural study of germanium sulfide glasses 22 shows that the broad peak at ϳ3.6 Å corresponds to S-S second neighbors and longer Ge-Ge correlations in corner-shared GeS 4/2 tetrahedra ͑CS-GeS 4 ͒.…”

Section: Discussionmentioning

confidence: 68%

“…This value ͑2.26 Å͒ is also consistent with 2.21− 2.24 Å distances corresponding to Ge-S first neighbors in GeS 4/2 tetrahedra for germanium sulfide glasses. 22 Kakinuma et al 10 observed a peak at 2.48Ϯ 0.02 Å on the g͑r͒ for Ge 10 Sb 30 S 60 , which transformed into a shoulder for the alloys with 20 and 30 at. % of Ge.…”

Section: Discussionmentioning

confidence: 98%

Radiation-modified structure of Ge25Sb15S60 and Ge35Sb5S60 glasses

Kavetskyy¹,

Shpotyuk²,

Kaban³

et al. 2008

The Journal of Chemical Physics

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Atomic structures of Ge 25 Sb 15 S 60 and Ge 35 Sb 5 S 60 glasses are investigated in the ␥-irradiated and annealed after ␥-irradiation states by means of high-energy synchrotron x-ray diffraction technique. The first sharp diffraction peak ͑FSDP͒ is detected at around 1.1 Å −1 in the structure factors of both alloys studied. The FSDP position is found to be stable for radiation/annealing treatment of the samples, while the FSDP intensity shows some changes between ␥-irradiated and annealed states. The peaks in the pair distribution functions observed between 2 and 4 Å are related to the Ge-S, Ge-Sb, and Sb-Sb first neighbor correlations and Ge-Ge second neighbor correlations in the edge-shared GeS 4/2 tetrahedra, and S-S and/or Ge-Ge second neighbor correlations in the corner-shared GeS 4/2 tetrahedra. Three mechanisms of the radiation-/annealing-induced changes are discussed in the framework of coordination topological defect formation and bond-free solid angle concepts.

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The Wemple–DiDomenico model as a tool to probe the building blocks conforming a glass

González-Leal

2013

Physica Status Solidi (b)

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The low‐frequency optical dielectric response of glasses is discussed regarding its sensitivity to the presence of building blocks conforming their structure. The model suggested by Wemple and DiDomenico to describe the dispersion of the refractive index of solids is further developed in terms of the cation local bonding environment and its effect in the value of the dispersion energy. As40S60−xSex glass alloys have been studied under these considerations and quantitative estimates of the concentration of building blocks are reported. Results are consistent with Raman experiments.

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Short, intermediate and mesoscopic range order in sulfur-rich binary glasses

Cited by 72 publications

References 21 publications

Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

Radiation-modified structure of Ge25Sb15S60 and Ge35Sb5S60 glasses

The Wemple–DiDomenico model as a tool to probe the building blocks conforming a glass

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