Potassium niobate (KNbO₃) is a ferroelectric ceramic compound with semiconductor properties, belonging to the perovskite oxide family. It is primarily investigated for photonic and electro-optic applications due to its nonlinear optical response and ferroelectric switching behavior. KNbO₃ appears in research and emerging commercial contexts for frequency conversion, optical modulation, and integrated photonic devices, where engineers value its ability to manipulate light properties through applied electric fields—a capability that distinguishes it from conventional passive optical materials.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 128.6 | GPa | — | ||
| ↳ | 103.6 range 102.6–104.6median of 2 measurements | GPa | — | ||
Poisson's Ratio(ν) | 0.3400 | - | — | ||
Shear Modulus(G)2 entries | 57.16 | GPa | — | ||
| ↳ | 54.45 range 40.66–68.24median of 2 measurements | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.443 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 1.714 | eV | — | ||
| ↳ | 3.500 | eV | — | ||
| ↳ | 2.089 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 7.940 | - | — | ||
| ↳ | 57.67 | - | — | ||
| ↳ | 25.74 range 5.544–45.94median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB)3 entries | 0.000 | μB | — | ||
| ↳ | -6.451e-7 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 3.258 | C/m² | — | ||
| ↳ | 0.2790 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -313.6 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.697 | eV/atom | — | ||
| ↳ | -0.4200 | eV/atom | — | ||
| ↳ | -2.679 | eV/atom | — |