Sr₃Ti₂O₇ is a layered perovskite ceramic semiconductor composed of strontium and titanium oxides, belonging to the Ruddlesden-Popper family of complex oxides. This material is primarily investigated in research and emerging applications for photocatalysis, particularly water splitting and environmental remediation, where its semiconductor bandgap and layered structure enable photoinduced charge separation. It is also explored in ferroelectric and dielectric device applications, offering potential advantages over simpler titanates due to its anisotropic crystal structure and tunable electronic properties.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 21,642.5 | ksi | — | ||
Poisson's Ratio(ν) | 0.2500 | - | — | ||
Shear Modulus(G) | 12,927.2 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1793 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 3.260 | eV | — | ||
| ↳ | 1.885 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 74.75 range 5.440–144.1median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -172.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -3.371 | eV/atom | — |