Tm4B6O15 — Properties & Data | MatWorld

Tm4B6O15

ceramic

· JVASP-50404· Tm4B6O15

Tm4B6O15 is a rare-earth borate ceramic compound containing thulium, belonging to the family of rare-earth borates that exhibit thermal stability and potential optical properties. This material remains primarily in the research and development phase; rare-earth borates are investigated for applications requiring high-temperature stability, optical transparency, or specialized electronic functions, with potential relevance in scenarios where conventional oxides or borosilicates are inadequate.

high-temperature ceramics (research)optical materials (development)rare-earth compound systemsthermal barrier coatings (potential)electronic ceramics (exploratory)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.585	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	4.956	eV	DFT · OptB88vdW
↳	7.085	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.848	-	DFT · OptB88vdW
↳	2.321	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000595	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000840	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-127	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	404.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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)	0.03940	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.053	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.

Tm4B6O15

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental