Rubidium bromide (RbBr) is an ionic halide ceramic compound belonging to the alkali halide family, characterized by its rock-salt crystal structure and relatively low density for a ceramic. Historically used in specialized optical and photonic applications where its infrared transparency and hygroscopic stability make it valuable for infrared optics, scintillation detectors, and radiation detection systems. RbBr is less common than other alkali halides (such as NaCl or KBr) in mainstream engineering but remains relevant in research and niche high-performance applications where its specific optical and thermal properties provide advantages over conventional alternatives.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 13.79 | GPa | DFT | ||
| ↳ | 15.53 | GPa | DFT · OptB88vdW | ||
| ↳ | 13.79 | GPa | DFT · PBE | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | DFT · PBE | ||
Elastic Anisotropy(AU) | 1.417 | - | DFT · PBE | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | DFT · PBE | ||
Poisson's Ratio(ν)2 entries | 0.3000 | - | DFT · OptB88vdW | ||
| ↳ | 0.2974 | - | DFT · PBE | ||
Shear Modulus(G)3 entries | 6.463 | GPa | DFT | ||
| ↳ | 9.500 | GPa | DFT · OptB88vdW | ||
| ↳ | 6.463 | GPa | DFT · PBE |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.400 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 7.650 | eV | Measured | ||
| ↳ | 4.436 | eV | DFT · OptB88vdW | ||
| ↳ | 6.932 | eV | DFT · TBmBJ | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 4.705 | - | DFT · OptB88vdW | ||
| ↳ | 5.690 | - | DFT · PBE | ||
| ↳ | 3.954 range 2.588–5.320median of 2 measurements | - | DFT · PBEsol | ||
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries | 2.788 | - | DFT · OptB88vdW | ||
| ↳ | 2.262 | - | DFT · TBmBJ | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | DFT · PBE | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | DFT · PBE | ||
Magnetic Moment(μB) | 0.000 | µB | DFT · OptB88vdW | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | DFT · OptB88vdW | ||
Thermoelectric Power Factor(PF)2 entries | 0.000704 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.00142 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -103.1 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 449.9 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Spectroscopic Limited Maximum Efficiency (SLME)(SLME) | 0.000 | % | DFT · TBmBJ |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf)2 entries | -1.866 | eV/atom | DFT · OptB88vdW | ||
| ↳ | -2.045 | eV/atom | Measured |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data