KMgF3

ceramic

· KMgF3

KMgF₃ is a potassium magnesium fluoride ceramic compound belonging to the perovskite-family fluorides, valued for its optical transparency in the ultraviolet and infrared regions. This material is primarily used in optics, photonics, and specialized high-energy applications where conventional glass or oxide ceramics fail; it is also investigated for its potential as a solid electrolyte in advanced battery and fuel cell systems. Engineers select KMgF₃ when demanding optical properties across broad wavelength ranges or enhanced ionic conductivity at elevated temperatures are required, though availability and processing complexity make it suitable mainly for performance-critical rather than commodity applications.

UV/IR optics and windowslaser systems and photonicssolid electrolytes for batterieshigh-temperature ionic conductorsspecialized aerospace opticsresearch and development 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)2 entries	9,293.4	ksi	DFT
↳	11,312.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	6,128.6	ksi	DFT
↳	7,414.3	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)	0.1127	lb/in³	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	7.682	eV	DFT · OptB88vdW
↳	10.64	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	6.178	-	DFT · OptB88vdW
↳	6.880	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.109	-	DFT · OptB88vdW
↳	1.774	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.6300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.920	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	0.000968	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00165	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-146.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	458.9	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)	-3.534	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.

KMgF3 — Properties & Data | MatWorld

KMgF3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental