Ho2Sn2O7

ceramic

· JVASP-19078· Ho2Sn2O7

Ho₂Sn₂O₇ is a rare-earth tin oxide ceramic belonging to the pyrochlore family, composed of holmium and tin in a ordered cubic crystal structure. This material is primarily investigated in research contexts for high-temperature applications and as a thermal barrier coating candidate, where its rare-earth content and ceramic stability offer potential advantages in extreme thermal environments. The pyrochlore family is notable for exceptional thermal stability and low thermal conductivity, making compounds like this candidates for aerospace and energy applications, though Ho₂Sn₂O₇ remains largely in the experimental phase compared to established thermal barrier coating systems.

thermal barrier coatings (research phase)high-temperature structural ceramicsrare-earth ceramic compoundsaerospace applications (experimental)thermal management systemsadvanced materials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2863	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.888	eV	DFT · OptB88vdW
↳	4.384	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.377	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.4100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.310	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000699	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00123	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-103.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	367.8	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.791	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.

Ho2Sn2O7 — Properties & Data | MatWorld

Ho2Sn2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental