BaB6 — Properties & Data | MatWorld

BaB6

Name: BaB6
Brand: MatWorld

semiconductor

· BaB6

Barium hexaboride (BaB₆) is a ceramic compound belonging to the hexaboride family, characterized by a crystal structure combining barium cations with a boron cage framework. It is primarily valued as a thermionic electron emitter and cathode material, where its low work function and high thermal stability make it superior to tungsten alternatives in high-temperature vacuum applications. The material also sees emerging use in specialized wear-resistant coatings and cutting tools where its hardness and chemical inertness provide advantages, though it remains less common than competing ceramics in mainstream industrial production.

thermionic cathodes and vacuum deviceselectron gun emittershigh-temperature aerospace componentswear-resistant coatingsresearch cathode materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	147.9	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1600	-	DFT · OptB88vdW
Shear Modulus(G)	135.7	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.294	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.640	eV	Measured
↳	0.03500	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	9.428	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00106	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000793	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-88.62	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	82.22	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4585	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

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.

BaB6

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control