Syntheses and characterization of two new selenides Ba5Al2Se8 and Ba5Ga2Se8

Mei, Dajiang; Yin, Wenlong; Lin, Zheshuai; He, Ran; Yao, Jiyong; Fu, Peizhen; Wu, Yicheng

doi:10.1016/j.jallcom.2010.11.178

Cited by 26 publications

(19 citation statements)

References 47 publications

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“…The mixed occupancy of the S/Se and Ga/Sn positions is determined by the structural refinements that consider charge balance. The Ga–S(Se), Ge–S(Se), (Ga/Sn)–S, and Na–S(Se) bond lengths in 1–4 (Table S2 † ) are close to those in BaGa 4 S 7 , 25 BaGa 2 GeS 6 , 36 Ba 2 Ga 8 GeS 16 , 41 PbGa 2 GeSe 6 , 18 Na 4 MgGeSe 6 , 68 Ba 5 Ga 2 Se 8 , 69 KCd 4 Ga 5 Se 12 , 70 Na 3 Mo 15 Se 19 , 71 and Na 4 Sn 3 S 8 . 72 …”

Section: Resultsmentioning

confidence: 61%

New strategy for designing promising mid-infrared nonlinear optical materials: narrowing the band gap for large nonlinear optical efficiencies and reducing the thermal effect for a high laser-induced damage threshold

et al. 2018

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Section: Resultsmentioning

confidence: 61%

New strategy for designing promising mid-infrared nonlinear optical materials: narrowing the band gap for large nonlinear optical efficiencies and reducing the thermal effect for a high laser-induced damage threshold

et al. 2018

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“…Along the BaSe-GeSe 2 binary, there have been reports of crystalline compounds such as Ba 2 GeSe 4 [32] and Ba 2 Ge 2 Se 5 [33]; however, information about glass formation remains lacking. The same is true for the BaSe-Ga 2 Se 3 binary, which contains crystalline compounds such as BaGa 2 Se 4 [34], BaGa 4 Se 7 [35,36], Ba 5 Ga 2 Se 8 [37], and Ba 5 Ga 4 Se 10 [38].…”

Section: 1mentioning

confidence: 83%

Structure and properties of off-stoichiometric Ba–Ga–Ge selenide glasses

Mao

Kaseman

Aitken

et al. 2015

Journal of Non-Crystalline Solids

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Off-stoichiometric glasses in the Ba-Ga-Ge-Se system with Se excess or deficiency (BGGS ± Se) are synthesized and their structure is characterized using Raman and multinuclear ( 77 Se, 71 Ga) magic-angle-spinning nuclear magnetic resonance (MAS NMR) spectroscopy. The results reveal that the structure of these off-stoichiometric BGGS ± Se glasses consists of a charge-compensated, partially covalent network of corner-sharing (Ga/Ge)Se 4 tetrahedra where [GaSe 4 ] − tetrahedra charge balance the Ba 2+ cations. Addition of excess Se to a stoichiometric BaSe-Ga 2 Se 3 -GeSe 2 glass with BaSe:Ga 2 Se 3 N 1 results in the formation of Se-Se linkages, while Se deficiency is accommodated via the formation of homopolar Ge-Ge bonds, in agreement with the continuously-alloyed structural scenario of purely covalent chalcogenide glasses. Such composition-dependent structural evolution is shown to be consistent with the corresponding variation in density and glass transition temperature.

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“…For these compounds, the larger content of alkali cations (K, Cs) and alkaline cations (Ba, Sr) is, the sparser the PS 4 and AsS 4 tetrahedra connectivity will be, which can be referred to our previous work on Ba 5 Al 2 Se 8 and Ba 5 Ga 2 Se 8 . 45 And the tetrahedra would be completely separated from each other by the K (or Cs) and Sr (or Ba) atoms.…”

Section: Resultsmentioning

confidence: 99%