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Lithium niobate

CAS number : 12031-63-9

Molecular weight :147.85

Molecular formula/chemical symbol :LiNbO3

Description :

Lithium niobate (LiNbO3) is a compound of niobium, lithium, and oxygen. Its single crystals are an important material for optical waveguides, mobile phones, piezoelectric sensors, optical modulators and various other linear and non-linear optical applications.

Lithium niobate

Identifiers

CAS number

12031-63-9 YesY

PubChem

159404

ChemSpider

10605804 YesY

Jmol-3D images

Image 1

Properties

Molecular formula

LiNbO3

Molar mass

147.846 g/mol

Appearance

colorless solid

Density

4.65 g/cm3 [1]

Melting point

1257 °C[1]

Solubility in water

None

Band gap

4 eV

Refractive index (nD)

no 2.30, ne 2.21[2]

Structure

Crystal structure

trigonal

Space group

R3c

Point group

3m (C3v)

Hazards

EU Index

Not listed

 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa

USES :

Lithium niobate is used extensively in the telecoms market, e.g. in mobile telephones and optical modulators. It is the material of choice for the manufacture of surface acoustic wave devices. For some uses it can be replaced by lithium tantalate, LiTaO3. Other uses are in laser frequency doubling, nonlinear optics, Pockels cells, optical parametric oscillators, Q-switching devices for lasers, other acousto-optic devices, optical switches for gigahertz frequencies, etc. It is an excellent material for manufacture of optical waveguides.

It's also used in the making of optical spatial low-pass (anti-aliasing) filters.

Keywords:Electronic chemicals

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