CaF2 — Properties & Data | MatWorld

CaF2

Name: CaF2
Brand: MatWorld

ceramic

· CaF2

Calcium fluoride (CaF₂) is an ionic ceramic compound valued for its exceptional optical transparency across a wide spectral range, from ultraviolet through infrared wavelengths. It is widely used in precision optics, thermal imaging systems, and high-energy laser applications where conventional glass fails; its chemical stability and low thermal expansion also make it suitable for specialized metallurgical applications as a flux. Engineers select CaF₂ over alternatives like silica or sapphire when broad-spectrum transparency, particularly in the IR region, or extreme chemical resistance is required, despite its higher cost and more limited mechanical workability.

optical lenses and windowsinfrared spectroscopylaser optics and UV-IR systemshigh-temperature thermal imagingmetallurgical fluxcryogenic applications

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	76.55	GPa	DFT
↳	85.96	GPa	DFT · OptB88vdW
↳	76.55	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.4910	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2800	-	DFT · OptB88vdW
↳	0.2849	-	DFT · PBE
Shear Modulus(G)3 entries	38.44	GPa	DFT
↳	51.49	GPa	DFT · OptB88vdW
↳	38.44	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)	3.135	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)2 entries	7.589	eV	DFT · OptB88vdW
↳	9.920	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)2 entries	9.710	-	DFT · OptB88vdW
↳	5.188 range 2.318–8.059median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.322	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.4700	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.980	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	0.000718	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00242	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-116.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	473.3	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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2449	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-3.926	eV/atom	DFT · OptB88vdW
↳	-4.242	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.

CaF2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental