CaHfO3 — Properties & Data | MatWorld

CaHfO3

Name: CaHfO3
Brand: MatWorld

ceramic

· CaHfO3

Calcium hafnate (CaHfO3) is a perovskite-structured ceramic compound combining calcium oxide with hafnium oxide, belonging to the family of refractory oxides. This material is primarily of research and developmental interest for high-temperature applications where exceptional thermal stability and chemical inertness are required, such as thermal barrier coatings, advanced refractory linings, and potential use in nuclear or aerospace environments where hafnium-based ceramics offer superior performance compared to more common alternatives like yttria-stabilized zirconia. Its attraction lies in hafnium's inherent resistance to oxidation and its ability to withstand extreme temperatures, making CaHfO3 a candidate material for next-generation thermal protection systems, though industrial deployment remains limited compared to more established perovskite ceramics.

thermal barrier coatingsrefractory liningshigh-temperature structural applicationsaerospace thermal protectionnuclear reactor componentsresearch and development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	167.3	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	98.79	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.928	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	4.716	eV	DFT · PBE
↳	7.000	eV	DFT · GLLB-SC
↳	4.568	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	9.446	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.381	-	DFT · OptB88vdW
Magnetic Moment(μB)3 entries	0.000	μB	DFT
↳	0.000613	μB	DFT
↳	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00187	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000602	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-272.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	427.8	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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)4 entries	-3.669	eV/atom	DFT
↳	0.02000	eV/atom	DFT
↳	-3.679	eV/atom	DFT · OptB88vdW
↳	-3.689	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.

CaHfO3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental