Titanium dioxide ( TiO2 )

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Titanium dioxide TiO2

Titanium dioxide TiO2

Crystal properties

Crystal growth method

Flame fusion method

Crystal growth orientation

(001), (110)

Maximum size

Up to Æ 1.5 inch * 2 inch length

Variations

Doped crystals (Fe, Nb, W, Ta, V)
Other dopands on request

Crystallographic properties

Crystallographic structure

Tetragonal
a = b = 4.593 Å
c = 2.959 Å

Twinning structure

Type a) Optical grade, grain  boundaryfree
Type h) Electronic grade, with  domain structure

Colour

Slight Yellow, transparent

Physical properties

Density 

4.26 g/m3

Melting point

1825 °C

Hardness

6.5 - 7 (Mohs)

Thermal expansion coefficient

9.943 * 10-6 K-1
7.192 * 10-6 K-1

|| c-axis
^c-axis

Physical properties cont.

Dielectric constant

190
85

|| c-axis
^ c-axis

Dielectric loss tangent

Titanium

17 * 10-3

 

Specific resistivity

> 1013 W/cm

 

Optical properties

Transmission range

0.42 to 6.0 µm

 

Refraction index

nd = 2.613

ordinary ray

nd = 2.909

extraordinary ray

(nf - nc) = 0.164

ordinary ray

(nf - nc) = 0.207

extraordinary ray

Birefringence

(nc - no) = 0.296

 

 

X-ray properties

Orientation Titanium

(100), (110), (001)