Ca2Nb2O7

ceramic

· JVASP-19101· Ca2Nb2O7

Calcium niobate (Ca₂Nb₂O₇) is a complex oxide ceramic compound belonging to the pyrochlore family, valued for its thermal stability and ionic conductivity properties. This material is primarily investigated for solid-state electrolyte and thermal barrier coating applications in high-temperature energy systems, where its ability to conduct oxygen ions at elevated temperatures makes it an alternative to conventional yttria-stabilized zirconia in specialized fuel cell and thermochemical energy conversion contexts. Its development is driven by the need for improved performance in extreme thermal environments where conventional ceramics face limitations.

solid oxide fuel cellsthermal barrier coatingshigh-temperature electrolytesadvanced ceramics researchenergy conversion systemsrefractory applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1543	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.407	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.968	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.8100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.850	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00145	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00102	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-244	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	384.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	-3.051	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.

Ca2Nb2O7 — Properties & Data | MatWorld

Ca2Nb2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental