| Identification | More | [Name]
POTASSIUM NIOBATE | [CAS]
12030-85-2 | [Synonyms]
POTASSIUM COLUMBATE
POTASSIUM METACOLUMBATE
POTASSIUM NIOBATE
POTASSIUM NIOBIUM OXIDE
niobate(nbo31-),potassium
niobate,octapotasium
niobiumpotassiumoxide(knbo3)
potassiumniobiumtrioxide
Potassium niobate (99.999%-Nb) PURATREM
Potassiumniobatewhitepowder
potassium niobium oxide, puratronic
niobate, potassium
Potassium niobium oxide, Puratronic(R), 99.999% (metals basis)
Potassium columbate: (Potassium niobate)
Potassium niobium oxide, Puratronic, 99.999% (metals basis)
potassium niobate(V) | [EINECS(EC#)]
234-744-4 | [Molecular Formula]
KNbO3 | [MDL Number]
MFCD00049651 | [Molecular Weight]
180 | [MOL File]
12030-85-2.mol |
| Questions And Answer | Back Directory | [Description]
Potassium niobate (KNbO3) is an inorganic compound with the formula KNbO3. A colorless solid, it is classified as a perovskite ferroelectric material. It exhibits nonlinear optical properties, and is a component of some lasers. Nanowires of potassium niobate have been used to produce tunable coherent light. | [Chemical Properties]
On cooling from high temperature, KNbO3 undergoes a series of structural phase transitions. At 435 °C, the crystal symmetry changes from cubic centrosymmetric (Pm3m) to tetragonal non-centrosymmetric (P4mm). On further cooling, at 225 °C the crystal symmetry changes from tetragonal (P4mm) to orthorhombic (Amm2) and at −50 °C from orthorhombic (Amm2) to rhombohedral (R3m). |
| Hazard Information | Back Directory | [Chemical Properties]
-100 mesh with 99.9% purity; white powder(s) [STR93] [CER91] | [Uses]
Potassium niobate can be used to prepare bismuth sodium titanate(BNT)-KN ceramics (BNT–KN ceramics) by the mixed oxide method. The addition of KN to the BNT system increases the dielectric and piezoelectric properties of the BNT-KN ceramics. These properties of the ceramic system are suitable for the development of lead-free capacitors. Cu dopped KNbO3 single crystals also found application in semiconductor laser technology because Cu doping resulted in electronic states with near-infrared absorption bands. | [General Description]
Potassium niobate (KNbO3, KN) is a perovskite-type well-known ferroelectric material with a wide range of applications in electromechanical, nonlinear optical, frequency doubler, and holographic storage system applications. Single crystal of a KNbO3 is known to have high piezoelectric activity because of its high electromechanical coupling factors. Therefore KN materials have received much interest in the development of lead-free piezoelectric materials. | [Flammability and Explosibility]
Notclassified |
| Safety Data | Back Directory | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
2
| [RTECS ]
TT3500000
| [TSCA ]
Yes |
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