Ca₂Si is an intermetallic compound and semiconductor material belonging to the silicide family, composed of calcium and silicon in a 2:1 stoichiometric ratio. This material is primarily of research interest in materials science and solid-state physics, where it is investigated for potential applications in thermoelectric devices, optoelectronic components, and advanced semiconductor technologies. Ca₂Si represents an emerging class of alkaline-earth silicides that could offer advantages in niche applications requiring specific band-gap properties or thermal-mechanical characteristics, though industrial adoption remains limited compared to conventional silicon-based semiconductors.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 5,324.4 | ksi | — | ||
| ↳ | 5,324.4 | ksi | — | ||
| ↳ | 5,744.9 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.3229 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2508 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 3,182.6 | ksi | — | ||
| ↳ | 3,182.6 | ksi | — | ||
| ↳ | 3,424.3 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.07966 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 1.900 | eV | — | ||
| ↳ | 0.2890 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 29.42 | - | — | ||
| ↳ | 19.83 | - | — | ||
| ↳ | 18.00 range 14.03–21.96median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -162.3 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.5523 | eV/atom | — |