KRbAu2

metal

· JVASP-102947· KRbAu2

KRbAu2 is an intermetallic compound combining potassium, rubidium, and gold in a stoichiometric ratio. This is an experimental research material rather than an established engineering alloy; it belongs to the family of ternary alkali-gold intermetallics being studied for fundamental properties and potential advanced applications. The compound's notable characteristics include relatively low stiffness combined with unusual elastic properties (reflected in its Poisson's ratio), making it of interest to researchers investigating novel metallic phases, phonon engineering, or thermoelectric and electronic device concepts.

research materialsintermetallic compoundsfundamental materials sciencepotential thermoelectric applicationssolid-state physics studiesexotic alloy development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	2,581.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	1,427.2	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2413	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.2170	eV	DFT · OptB88vdW
↳	0.2060	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.117	-	DFT · OptB88vdW
↳	6.439	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.960	%	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)	-0.4036	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

Export Control

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.

KRbAu2 — Properties & Data | MatWorld

KRbAu2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control