Titanium Dioxide Rutile type
TiO2 (Rutile)
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Chemical name
Titanium Dioxide Rutile type |
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Mineral name
Rutile |
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Chemical formula
TiO2 (Rutile) |
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Melting point [°C]
1825 |
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Crystal system
tetragonal |
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Unit cell
a [Å]:4.593 b [Å]:4.593 c [Å]:2.959 |
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Molecular weight [g/mol]
79.9378 |
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Twinning
Type a) optical grade, grain boundary free; Type h) electronic grade, with domain structure |
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Mohs hardness
6.5 - 7 |
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Density [g/cm3]
4.26 |
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Color
slight yellow, transparent |
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Streak
white |
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Refractive Index
nd=2.613 (ordinary ray); nd=2.909 (extraordinary ray); (nf - nc)=0.164 (ordinary ray); (nf - nc)=0.207 (extraordinary ray); (nc - n0)=0.296 |
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Piezoelectric crystals
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Thermal expansation coefficient [(10^(-5))/K]
0.9943 || c-axis; 0.7192 ^c-axis |
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Crystal growth method
flame fusion method |
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Crystal growth orientation
(001), (110) |
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Maximum size
up to Æ 1.5 inch * 2 inch length |
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Variations
doped crystals (Fe, Nb, W, Ta, V), other dopands on request |
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Dielectric constant
190 || c-axis; 85 ^c-axis |
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Dielectric loss tangent (10 GHz)
17^10^(-3) |
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Specific resistivity [W/cm]
>10^13 |
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Transmission range
0.42-6.0 μm |
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Orientation
(100), (110), (001) |
