Rb2MgF4 — Properties & Data | MatWorld

Rb2MgF4

ceramic

· Rb2MgF4

Rb2MgF4 is an inorganic fluoride ceramic compound combining rubidium and magnesium fluorides, belonging to the family of metal fluoride ceramics. This material is primarily of research and specialized optical interest, as fluoride ceramics are transparent to infrared radiation and chemically inert; Rb2MgF4 is investigated for applications requiring high transparency in the mid-to-far infrared spectrum, particularly in optical windows, laser components, and thermal imaging systems where conventional glasses fail. The rubidium-magnesium fluoride composition offers potential advantages in environments demanding chemical resistance and thermal stability, though industrial adoption remains limited compared to more established fluoride ceramics like calcium fluoride.

infrared optical windowslaser optics and componentsthermal imaging systemshigh-temperature chemical environmentsresearch materials (experimental)

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	39.85	GPa	DFT
↳	50.41	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3000	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	20.96	GPa	DFT
↳	25.91	GPa	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)	3.953	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)	6.804	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)3 entries	5.908	-	DFT · OptB88vdW
↳	6.460	-	DFT · PBE
↳	4.263 range 2.176–6.351median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.205	-	DFT · OptB88vdW
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000787	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000513	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-123.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	524.3	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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00620	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.336	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.

Rb2MgF4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental