K4HgAs2 — Properties & Data | MatWorld

K4HgAs2

ceramic

· K4HgAs2

K4HgAs2 is an intermetallic ceramic compound containing potassium, mercury, and arsenic elements, representing a rare quaternary phase that falls within the broader family of metal arsenides and mercury-containing ceramics. This is a research-stage material with limited industrial deployment; it is primarily of interest to materials scientists studying layered crystal structures and potential semiconductor or electronic applications in specialized contexts. The material's notable characteristic involves its layered exfoliation behavior, which suggests potential relevance to applications requiring anisotropic properties or nanosheet extraction, though further development and characterization would be necessary before practical engineering adoption.

research and developmentlayered materialselectronic ceramicscrystal structure studiesspecialized semiconductor research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Exfoliation Energy(Eexf)	107.4	meV/atom	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.191	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)	0.7870	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)3 entries	11.88	-	DFT · OptB88vdW
↳	8.910	-	DFT · PBE
↳	7.098 range 5.398–8.797median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.851	-	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	0.000589	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000891	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-82.06	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	385.2	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4626	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.

K4HgAs2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental