KNa2Sb — Properties & Data | MatWorld

KNa2Sb

ceramic

· KNa2Sb

KNa2Sb is an intermetallic ceramic compound containing potassium, sodium, and antimony, belonging to the family of alkali-metal antimonides. This material is primarily of research interest rather than established industrial production, studied for its potential in thermoelectric applications and solid-state chemistry due to the mixed-alkali composition that can influence electronic and phononic properties. Engineers would consider this material in contexts exploring next-generation thermoelectric materials or specialized solid-state applications where the alkali-antimony framework offers tailored thermal or electrical characteristics.

thermoelectric devices (research)solid-state chemistryexperimental semiconductorsheat-to-electricity conversionmaterials screening for energy applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	20.87	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)	15.04	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.994	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.9200	eV	DFT · OptB88vdW
↳	1.933	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	17.44	-	DFT · OptB88vdW
↳	19.41	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.066	-	DFT · OptB88vdW
↳	6.065	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.1300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.9900	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	0.000262	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00191	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-46.67	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	269.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	24.45	%	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)	-0.5243	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.

KNa2Sb

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental