Raman and infrared studies of the structure of gallium sulphide based glasses

The formation and properties of glasses based on Ga2S3-Bi2S3 system

“…In the Ga 2 S 3 -Bi 2 S 3 two-component system, all samples investigated for glass formation were devitrified by airquenching although the samples of the compositions 50GaS 3/2 • 50BiS 3/2 and 40GaS 3/2 • 60BiS 3/2 were partially vitrified by water-quenching. This partial glass-forming range in the two-component system is consistent with that previously reported [21,22]. However, in the threecomponent system with the addition of SnS, some samples with appropriate compositions were vitrified more easily; glasses were obtained in the compositional region ranging from 30 to 40 mol% of GaS 3/2 , 30 to 50 mol% of BiS 3/2 , and 10 to 30 mol% of SnS.…”

“…The gallium sulfide-containing glass systems reported to date are classified into two groups [21]; one is a group represented by the Ga-Ge-S glass system [22,24] and the other is a group represented by the Ga-La-S glass system [18,19]. The former is characterized by a glass composition, in which a sulfide other than Ga 2 S 3 is a main component that forms the glass network predominantly, and Ga 2 S 3 is incorporated into the network.…”

“…Other than the Ga-Ge-S system, the Ga-Sb-S and the Ga-Ge-Sb-S glass systems are included in this group [7,[11][12][13][14][15][16][17]. For example, in the pseudo-two-component GeS 2 -Ga 2 S 3 system, the glass-forming region is below 30 mol% of Ga 2 S 3 [22,24]. On the other hand, the latter group represented by the Ga-La-S glass system is characterized by a glass composition in which Ga 2 S 3 plays a role of a network former as a main component and the other components work as a network modifier.…”

“…Although gallium sulfide is regarded as a glassforming compound, it needs other sulfides to be vitrified through a conventional melting-cooling procedure. Various sulfide glass systems containing gallium have been reported to date [18][19][20][21][22][23][24][25][26][27][28]. Among them, however, the Ge-free glass systems are still limited, and glasses reported as infrared transmitting materials contain a high content of Sb [13][14][15][16][17].…”

Magnetically Frustrated Quaternary Chalcogenides with Interpenetrating Diamond Lattices

“…The spectra were collected on a Lab RAM Aramis Horiba Jobin Yvom spectrometer using a HeNe laser source with a 0.03 filter with a 20 s exposure time. For compounds 1 – 3 , sharp peaks have been found in the range of 300–400 cm –1 which can be assigned as different stretching modes of Ga/ M –S bonds in the corner-shared (Ga/ M )­S 4 tetrahedral unit . The peaks at lower frequency range are due to Na–S bonds …”