BaO — Properties & Data | MatWorld

BaO

Name: BaO
Brand: MatWorld

ceramic

· BaO

Barium oxide (BaO) is an alkaline earth oxide ceramic compound with a simple rock-salt crystal structure, known for its high density and strong ionic bonding. It is primarily used in specialty ceramics, glass formulations, and as a precursor material in the production of advanced ceramics and electronic components. Engineers select BaO for applications requiring thermal stability, chemical inertness, and high-temperature performance, though its hygroscopic nature (tendency to absorb moisture) and reactivity with CO₂ require careful handling and storage in sealed environments.

glass and glazesrefractory ceramicselectronic ceramics and dielectricshigh-temperature coatingssintering aids for advanced ceramicsvacuum tube and cathode materials

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	68.36	GPa	DFT
↳	75.37	GPa	DFT · OptB88vdW
↳	68.36	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.00774	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2700	-	DFT · OptB88vdW
↳	0.2668	-	DFT · PBE
Shear Modulus(G)3 entries	37.75	GPa	DFT
↳	40.78	GPa	DFT · OptB88vdW
↳	37.75	GPa	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)	5.854	kg/m³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	4.800	eV	Measured
↳	2.085	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	43.04	-	DFT · OptB88vdW
↳	43.85 range 4.325–83.38median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.418	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW

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)	0.02850	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-2.746	eV/atom	DFT · OptB88vdW
↳	-2.840	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.

BaO

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental