Rubidium iodide (RbI) is an ionic halide ceramic compound composed of rubidium and iodine, belonging to the family of alkali halides. It is a brittle, transparent crystalline material that exhibits relatively modest mechanical stiffness and is sensitive to moisture and decomposition, limiting its practical engineering applications. RbI finds niche use in specialized optics, scintillation detectors for radiation sensing, and historical research applications, though it has largely been superseded by more robust alternatives such as cesium iodide in commercial radiation detection systems.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 9.655 | GPa | DFT | ||
| ↳ | 12.60 | GPa | DFT · OptB88vdW | ||
| ↳ | 9.655 | GPa | DFT · PBE | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | DFT · PBE | ||
Elastic Anisotropy(AU) | 1.443 | - | DFT · PBE | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | DFT · PBE | ||
Poisson's Ratio(ν)2 entries | 0.3000 | - | DFT · OptB88vdW | ||
| ↳ | 0.2934 | - | DFT · PBE | ||
Shear Modulus(G)3 entries | 4.626 | GPa | DFT | ||
| ↳ | 7.740 | GPa | DFT · OptB88vdW | ||
| ↳ | 4.626 | GPa | DFT · PBE |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.609 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 6.260 | eV | Measured | ||
| ↳ | 3.969 | eV | DFT · OptB88vdW | ||
| ↳ | 5.813 | eV | DFT · TBmBJ | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 4.783 | - | DFT · OptB88vdW | ||
| ↳ | 5.690 | - | DFT · PBE | ||
| ↳ | 4.101 range 2.871–5.332median of 2 measurements | - | DFT · PBEsol | ||
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries | 3.118 | - | DFT · OptB88vdW | ||
| ↳ | 2.562 | - | DFT · TBmBJ | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | DFT · PBE | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | DFT · PBE | ||
Electron Effective Mass(m*e) | 0.4000 | me | DFT · OptB88vdW · 27°C | ||
Hole Effective Mass(m*h) | 2.520 | me | DFT · OptB88vdW · 27°C | ||
Magnetic Moment(μB) | 0.000 | µB | DFT · OptB88vdW | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | DFT · OptB88vdW | ||
Thermoelectric Power Factor(PF)2 entries | 0.000706 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.00144 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -98.76 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 401 | 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 | -1.592 | eV/atom | DFT · OptB88vdW | ||
| ↳ | -1.719 | 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