Elastic properties of GeSbSe glasses

Mahadevan, Sudha; Giridhar, A; Singh, AK

doi:10.1016/0022-3093(83)90429-5

Cited by 58 publications

(42 citation statements)

References 15 publications

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“…The observed increase in K e in spite of the increase in V a is attributed to the increase in the number of bonds per glass formula unit and to the transformation of low co-ordinated structural units BO 3 into high co-ordinated structural BO 4 units, which in turn change the type of bonding of the investigated glasses. Such an increase in the bulk modulus-volume relationship was observed in some other types of glasses [46,47]. The non-linear change of log K e reveals that the change in V a is related to change in the nature of bonding and in the co-ordination of the constituent of the polyhedra in the structure.…”

Section: Ultrasonic and Elastic Behavior Of Glassmentioning

confidence: 92%

FTIR and ultrasonic investigations on modified bismuth borate glasses

Doweidar

Saddeek

2009

Journal of Non-Crystalline Solids

259

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Section: Ultrasonic and Elastic Behavior Of Glassmentioning

confidence: 92%

FTIR and ultrasonic investigations on modified bismuth borate glasses

Doweidar

Saddeek

2009

Journal of Non-Crystalline Solids

259

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“…Additionally, selenide and sulfide-containing ChG materials have been identified as possible materials for nonlinear optical applications. Several investigations [4][5][6][7][8] have evaluated the difference in physical and optical properties between both chalcogen systems (based solely on sulfur or selenium), but these works have not systematically investigated the influence of S substitution for Se on the structure and glass properties yet.…”

Section: Introductionmentioning

confidence: 99%

Evolution of glass properties during a substitution of S by Se in Ge28Sb12S60−xSex glass network

Guery

Musgraves

Labrugère

et al. 2012

Journal of Non-Crystalline Solids

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In this paper, a detailed study to examine the influence of chalcogen S/Se mole % in the Ge 28 Sb 12 S 60 −x Se x glass system, with x = 0, 15, 30, 45 and 60, is presented that provides insight into the effect of chalcogen content on the glass network and properties. Specifically, we report results of a systematic study to evaluate the relationship between compositional variation, glass properties and dominant bonding configurations. These materials are important to applications in optics manufacturing where correlation of physical and optical properties is required to predict fabrication behavior and ultimate material performance. It has been found that the dominant bonds in the glass system change upon reaching a specific molar ratio (percentage, %) of chalcogen substitution, between 30 b x b 45 mol%, changing from Ge-Se to Sb-Se bonds as the dominant bond type. This singularity has been observed using micro-Raman spectroscopy and X-ray photoelectron spectroscopy. This effect of the dominant bond configurational change was also shown to impart changes in important physical properties including micro-hardness, thermal properties, and the glass' viscometric behavior. Results indicate that the observed dominant bond change was responsible for a constant value in the evolution of both the micro-hardness and calorimetric glass transition temperature. The viscosity was also affected by the change in dominant bond type, breaking the monotony of the viscosity evolution during the S substitution, due to the total strength of the vitreous system which does not linearly increase.

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“…A variety of experiments on inorganic glasses have revealed 5,6 anomalies near a mean coordination of 2.40. Of these experiments elastic constants 7,8 and low-frequency vibrational density of states measurements 9,10 have been particularly insightful in elucidating aspects of the stiffness transition. The existence of a solitary stiffness transition in glasses near rϭ2.40, however, has become a matter of some recent discussions.…”

Section: Introductionmentioning

confidence: 99%

Stiffness transitions inSixSe1−xglasses from Raman scattering and temperature-modulated differential scanning calo

2000

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Temperature-modulated differential scanning calorimetry ͑MDSC͒ measurements on Si x Se 1Ϫx glasses show glass transitions to be thermally reversing in character in the composition window 0.20ϽxϽ0.27. Raman scattering shows a trimodal distribution of vibrational modes, identified with corner-sharing ͑CS͒, edge-sharing ͑ES͒, and Se-chain modes ͑CM͒. In the floppy region, 0ϽxϽ0.19, these modes are symmetric and are characteristic of a random network. In the transition region, 0.20ϽxϽ0.27, the ES and CM split into doublets suggesting appearance of extended range structural correlations. In the percolatively rigid region, xϾ0.27, the CS mode in addition to the ES and CM also splits into a doublet indicating growth of substantial medium range structure. The large compositional width (0.20ϽxϽ0.27) associated with Raman elastic thresholds coincides with the thermally reversing window from MDSC.

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Elastic properties of GeSbSe glasses

Cited by 58 publications

References 15 publications

FTIR and ultrasonic investigations on modified bismuth borate glasses

FTIR and ultrasonic investigations on modified bismuth borate glasses

Evolution of glass properties during a substitution of S by Se in Ge28Sb12S60−xSex glass network

Stiffness transitions inSixSe1−xglasses from Raman scattering and temperature-modulated differential scanning calo

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