BaGa4S7

semiconductor
· BaGa4S7

BaGa₄S₇ is a barium gallium sulfide compound belonging to the chalcogenide semiconductor family, characterized by a wide bandgap and strong nonlinear optical properties. This is a research-phase material primarily investigated for infrared photonics and frequency conversion applications, where its transparency in the mid-to-far infrared range and second-order nonlinear response offer advantages over more established alternatives like zinc selenide or gallium arsenide. The material remains largely confined to academic and specialized optics development rather than high-volume manufacturing, making it relevant for engineers designing novel infrared optical systems, parametric amplifiers, or laser frequency conversion devices.

nonlinear optical devicesinfrared frequency conversionmid-IR optical windowsparametric amplificationresearch photonicswide-bandgap semiconductors

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Density(ρ)
0.1389
lb/in³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
3.540
eV—
↳
2.454
eV—
Dielectric Constant (Relative Permittivity)(εr)
13.64
-—
Magnetic Moment(μB)
0.000
µB—
Piezoelectric Modulus(eij)
0.5474
C/m²—
Seebeck Coefficient(S)
-164.3
µV/K—
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.000
eV/atom—
Formation Energy(ΔHf)
-1.067
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.
BaGa4S7 — Properties & Data | MatWorld