KAlF4

metal

· KAlF4

KAlF₄ is a potassium aluminum fluoride compound that belongs to the fluoride ceramic family, characterized by ionic bonding between alkali metal and aluminum fluoride components. This material is primarily of research interest in solid-state chemistry and materials science, particularly for applications requiring fluoride-based ceramics with moderate stiffness and low density. Engineers would consider KAlF₄ in specialized contexts such as optical coatings, thermal barrier systems, or ionic conductor development, where its fluoride chemistry offers advantages over conventional oxide ceramics in terms of chemical stability or ionic transport properties.

optical coatings and thin filmssolid electrolytes (research)thermal barrier materialsfluoride ceramic compoundsionic conductors (experimental)

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	6,719.1	ksi	DFT
↳	9,946.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3600	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	2,667.1	ksi	DFT
↳	5,069.1	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)	0.1026	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	7.298	eV	DFT · OptB88vdW
↳	10.73	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	5.112	-	DFT · OptB88vdW
↳	10.63	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	1.970	-	DFT · OptB88vdW
↳	1.640	-	DFT · TBmBJ
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	0.000784	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000362	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-120.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	427.9	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)	-3.566	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

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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.

KAlF4 — Properties & Data | MatWorld

KAlF4

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