Al2Os

Name: Al2Os
Brand: MatWorld

metal

· Al2Os

Al2Os is an aluminum oxide compound that exhibits metallic or mixed-valence characteristics, positioning it between traditional ceramics and intermetallic materials. This composition appears to represent a research-phase or non-stoichiometric aluminum oxide variant, as it departs from the standard Al2O3 (corundum) structure and may explore intermediate oxidation states or defect engineering for enhanced functional properties. The material's notable stiffness and relatively low density make it potentially valuable for lightweight structural applications, while its exfoliation behavior suggests layered or stratified crystal characteristics that could be leveraged in advanced composites or functional devices.

lightweight structural componentshigh-stiffness ceramics/compositesresearch oxidation statesadvanced refractory materialsaerospace/automotive weight reductionmaterials science experimentation

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	27,689.4	ksi	DFT
↳	27,081.4	ksi	DFT · OptB88vdW
↳	27,689.4	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.3101	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Exfoliation Energy(Eexf)	742.4	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)2 entries	0.2100	-	DFT · OptB88vdW
↳	0.2027	-	DFT · PBE
Shear Modulus(G)3 entries	20,532.5	ksi	DFT
↳	20,324.1	ksi	DFT · OptB88vdW
↳	20,532.5	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)	0.3439	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.3680	eV	DFT · OptB88vdW
↳	0.4120	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	25.10 range 17.50–32.71median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	18.23	-	DFT · OptB88vdW
↳	17.72	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.01667	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.01667	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00370	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00280	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-323.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	168	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	10.63	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.5831	eV/atom	DFT · OptB88vdW
↳	-0.4654	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

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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.

Al2Os — Properties & Data | MatWorld

Al2Os

Mechanical Properties

Physical Properties

Electrical Properties

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