Tm2SeO2 — Properties & Data | MatWorld

Tm2SeO2

ceramic

· JVASP-49819· Tm2SeO2

Tm2SeO2 is an oxychalcogenide ceramic compound containing thulium, selenium, and oxygen—a rare-earth ceramic belonging to the mixed-anion ceramic family. This is primarily a research material studied for its potential in advanced optoelectronic and photonic applications, particularly in contexts where rare-earth dopants are leveraged for luminescence, laser emission, or radiation detection; limited industrial production and application data suggest this compound remains in the development phase rather than established engineering use.

rare-earth photonicsresearch ceramicsoptical materialsinfrared opticsradiation detectionadvanced ceramics development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	13,965.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3400	-	DFT · OptB88vdW
Shear Modulus(G)	7,047.4	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3200	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.298	eV	DFT · OptB88vdW
↳	3.686	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	44.51	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.731	-	DFT · OptB88vdW
↳	4.665	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.6667	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.083	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	0.00194	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00234	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-213.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	262.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.6000	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.04480	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.311	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.

Tm2SeO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental