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541206

Sigma-Aldrich

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
EC Number:
234-744-4
MDL number:
MFCD00049651
UNSPSC Code:
12352300
PubChem Substance ID:
24878525
NACRES:
NA.23

form

powder

SMILES string

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

InChI

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

InChI key

UKDIAJWKFXFVFG-UHFFFAOYSA-N

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.[1][2][3]

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.[2] Cu dopped KNbO3 single crystals also found application in semiconductor laser technology because Cu doping resulted in electronic states with near-infrared absorption bands.[3]

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
MKBZ3579V
MKBX5318V
MKBP9322V
MKBJ9133V
06411EH

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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.
Yuri Nakayama et al.
Nature, 447(7148), 1098-1101 (2007-06-29)
One crucial challenge for subwavelength optics has been the development of a tunable source of coherent laser radiation for use in the physical, information and biological sciences that is stable at room temperature and physiological conditions. Current advanced near-field imaging
Qi Wang et al.
International journal of oral science, 1(2), 99-104 (2009-06-01)
The piezoelectric properties and cytotoxicity of a porous lead-free piezoelectric ceramic for use as a direct bone substitute were investigated. Cold isostatic pressing (CIP) was applied to fabricate porous lithium sodium potassium niobate (Li0.06Na0.5K0.44) NbO3 specimens using a pore-forming method.
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
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
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