Ba2HfO4

Name: Ba2HfO4
Brand: MatWorld

ceramic

· Ba2HfO4

Ba₂HfO₄ is a barium hafnate ceramic compound belonging to the rare-earth and refractory oxide family, characterized by a perovskite-related crystal structure. This material is primarily investigated in research contexts for high-temperature applications and specialized electronic devices, where its chemical stability and thermal properties are leveraged. While not yet widely commercialized, hafnate ceramics like this compound are of interest for advanced aerospace thermal protection, nuclear fuel cladding alternatives, and high-k dielectric applications where conventional oxides reach performance limits.

high-temperature structural ceramicsrefractory coatingsnuclear fuel systemsadvanced dielectric materialsaerospace thermal protectionresearch/development phase materials

Compliance & Regulations

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

Units:

si imperial

Filter by

Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	15,940.2	ksi	DFT
↳	17,221.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	8,668.4	ksi	DFT
↳	9,428.9	ksi	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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2618	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.476	eV	DFT · OptB88vdW
↳	4.918	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	29.14	-	DFT · OptB88vdW
↳	18.22 range 4.423–32.02median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.447	-	DFT · OptB88vdW
↳	3.751	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4900	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.717	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00128	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00161	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-164	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	391.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.412	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.

Ba2HfO4 — Properties & Data | MatWorld

Ba2HfO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental