Si7Ge — Properties & Data | MatWorld

Si7Ge

ceramic

· JVASP-92177· Si7Ge

Si₇Ge is a silicon-germanium ceramic compound that combines the structural properties of silicon carbide-family materials with germanium's electronic characteristics, positioning it at the intersection of structural and semiconductor ceramics. This material is primarily of research and developmental interest for high-temperature structural applications and advanced optoelectronic devices where thermal stability and moderate mechanical strength are required. Si₇Ge ceramics are notable for their potential in thermoelectric applications, high-temperature sensors, and integrated photonic devices where the silicon-germanium matrix offers tunable properties between pure silicon and germanium endpoints.

thermoelectric deviceshigh-temperature sensorsphotonic integrated circuitsstructural ceramics researchsemiconductor heterostructuresthermal management components

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	12,154.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)	8,937.2	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.09603	lb/in³	DFT · OptB88vdW

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Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.4860	eV	DFT · OptB88vdW
↳	1.070	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	13.99	-	DFT · OptB88vdW
↳	10.93	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	32.46	%	DFT · TBmBJ

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, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01510	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.00846	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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.

Si7Ge

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental