KNbO3
semiconductor· KNbO3
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.
nonlinear optical deviceselectro-optic modulatorsfrequency converters (second harmonic generation)integrated photonicsferroelectric sensorsresearch/emerging applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| 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 | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.443 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| 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 | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| 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 | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.