Sm2Hf2O7 — Properties & Data | MatWorld

Sm2Hf2O7

ceramic

· JVASP-59258· Sm2Hf2O7

Sm₂Hf₂O₇ is a rare-earth hafnium oxide ceramic belonging to the pyrochlore family, composed of samarium and hafnium oxides. This material is primarily investigated for high-temperature structural and thermal applications, particularly in aerospace and advanced energy systems where exceptional thermal stability and oxidation resistance are required. Compared to conventional thermal barrier coatings and refractory materials, samarium hafnate offers potential advantages in extreme thermal environments, though it remains largely in the research and development phase rather than widespread industrial production.

thermal barrier coatingshigh-temperature ceramicsaerospace applicationsrefractory materialsadvanced energy systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	8.569	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	3.810	eV	DFT · OptB88vdW
↳	5.427	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.565	-	DFT · OptB88vdW
↳	3.660	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.7000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.300	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000830	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00176	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-160.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	369.1	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.

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)	-3.807	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.

Sm2Hf2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental