GeO2 — Properties & Data | MatWorld

GeO2

Name: GeO2
Brand: MatWorld

ceramic

· GeO2

GeO2 (germanium dioxide) is an inorganic ceramic compound belonging to the oxide ceramics family, characterized by a tetrahedral crystal structure similar to silica. It is primarily used in optics and photonics applications, particularly as a core material in optical fibers and infrared optical components, where its high refractive index and transparency in the infrared spectrum provide advantages over conventional silica-based alternatives. GeO2 is also investigated for applications in nuclear fuel matrices, solid electrolytes for energy storage, and as a dopant in specialty optical fibers; engineers select it when superior infrared transmission, high refractive index contrast, or radiation resistance is critical to device performance.

optical fiber coresinfrared opticsphotonics and waveguidesspecialty glass componentsradiation-resistant ceramicshigh-refractive-index applications

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	5,472.1	ksi	DFT
↳	6,216.3	ksi	DFT · OptB88vdW
↳	5,440.5	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.4090	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2600	-	DFT · OptB88vdW
↳	0.2100	-	DFT · PBE
Shear Modulus(G)3 entries	3,964.2	ksi	DFT
↳	3,699.9	ksi	DFT · OptB88vdW
↳	3,906.3	ksi	DFT · PBE

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1526	lb/in³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	5.540	eV	Measured
↳	1.288	eV	DFT · OptB88vdW
↳	3.255	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	6.729	-	DFT · OptB88vdW
↳	6.360	-	DFT · PBE
↳	4.817 range 3.210–6.424median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	3.405	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.2653	C/m²	DFT · OptB88vdW
↳	0.1625	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.540	%	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.1013	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.677	eV/atom	DFT · OptB88vdW
↳	-1.932	eV/atom	Measured

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.

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.

GeO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental