NbFeSb is an intermetallic compound combining niobium, iron, and antimony, representing a research-phase material within the broader family of refractory and half-Heusler intermetallics. This material is being investigated primarily for thermoelectric applications where the combination of metallic conductivity and low thermal transport could enable efficient thermal energy conversion, and secondarily for high-temperature structural applications where niobium-based intermetallics offer improved strength retention at elevated temperatures compared to conventional superalloys.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 165.8 | GPa | — | ||
| ↳ | 166.4 | GPa | — | ||
Poisson's Ratio(ν) | 0.3000 | - | — | ||
Shear Modulus(G)2 entries | 81.29 | GPa | — | ||
| ↳ | 79.70 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 8.437 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.7480 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 45.23 | - | — | ||
| ↳ | 45.35 | - | — | ||
| ↳ | 33.44 range 24.10–42.77median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 1.339 | C/m² | — | ||
| ↳ | 0.9641 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -198.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.3413 | eV/atom | — |