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Merck
CN

541206

Potassium niobate

Synonym(s):

Niobium potassium oxide (KNbO3 ), Potassium metaniobate, Potassium niobium trioxide

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About This Item

Linear Formula:
KNbO3
CAS Number:
12030-85-2
Molecular Weight:
180.00
NACRES:
NA.23
PubChem Substance ID:
24878525
UNSPSC Code:
12352300
EC Number:
234-744-4
MDL number:
MFCD00049651

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InChI key

UKDIAJWKFXFVFG-UHFFFAOYSA-N

InChI

1S/K.Nb.3O/q+1;;;;-1

SMILES string

[K+].[O-][Nb](=O)=O

form

powder

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.

Application

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.

Storage Class

13 - Non Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKBZ3579V
MKBX5318V
MKBP9322V
MKBJ9133V
06411EH

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Ya Yang et al.
Advanced materials (Deerfield Beach, Fla.), 24(39), 5357-5362 (2012-07-28)
Pyroelectric nanogenerators fabricated using a lead-free KNbO(3) nanowire-PDMS polymer composite are reported for the first time. The voltage/current output of the nanogenerators can be controlled by electric fields and enhanced by increasing the rate of change in temperature. The fabricated
A Magrez et al.
The journal of physical chemistry. B, 110(1), 58-61 (2006-02-14)
This communication reports on the growth of highly uniform KNbO3 nanowires exhibiting a narrow diameter distribution around 60 nm and a length-to-width ratio up to 100. The nanowires were prepared by a hydrothermal route, which enables simple, gram-scale production. A
Isaku Kanno et al.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 54(12), 2562-2566 (2008-02-16)
(K(x),Na(1-x))NbO(3) (KNN) thin films were deposited on (001)SrRuO(3)/(001)Pt/(001)MgO substrates by RF-magnetron sputtering, and their piezoelectric properties were investigated. The x-ray diffraction measurements indicated that the KNN thin films were epitaxially grown with the c-axis orientation in the perovskite tetragonal system.
Jun-Feng Liu et al.
Journal of nanoscience and nanotechnology, 2(6), 617-619 (2003-08-12)
Orthorhombic and rhombohedral single nanocrystalline KNbO3 with different morphologies was synthesized respectively at a relatively low temperature by simply changing the reaction solvent; a conceivable reaction process was illustrated based on the finding of a hexahedral intermediate product during the
F Dutto et al.
Nano letters, 11(6), 2517-2521 (2011-05-26)
We have synthesized and characterized three types of perovskite alkaline niobate nanowires: NaNbO(3), KNbO(3), and LiNbO(3) (XNbO(3)). All three types of nanowires exhibit strong nonlinear response. Confocal imaging has been employed to quantitatively compare the efficiency of synthesized nanowires to
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