LiErS2 — Properties & Data | MatWorld

LiErS2

ceramic

· JVASP-92215· LiErS2

LiErS2 is a lithium erbium sulfide ceramic compound belonging to the sulfide ceramic family, combining rare-earth and alkali-metal constituents. This material is primarily of research and developmental interest rather than established commercial production, with potential applications in solid-state electrolytes, optical materials, and high-temperature ceramics where the combination of lithium and rare-earth elements offers unique ionic and electronic properties. Engineers evaluating this material should recognize it as an experimental compound; its relevance depends on emerging technologies in all-solid-state batteries, photonic devices, or specialized refractory applications where sulfide ceramics provide advantages in thermal stability and ionic conductivity over oxide alternatives.

solid-state electrolyteslithium-ion battery researchrare-earth optical materialshigh-temperature ceramicsexperimental photonicsadvanced ceramic research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	65.06	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)	43.01	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.977	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	2.040	eV	DFT · OptB88vdW
↳	2.773	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	20.02	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.480	-	DFT · OptB88vdW
↳	5.358	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.5067	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.520	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	0.00296	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00190	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-233.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	275.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	7.620	%	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)	0.00900	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.012	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.

LiErS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental