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Rutile has a tetrahedral crystal structure with 4/m 2/m 2/m symmetry. It has a large birefringence, a wide transmission range, and good mechanical and chemically properties, which make it suitable for fabrication of polarizing parts.
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Transparency Range (nm) |
430~5500
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Crystal Symmetry Class |
Tetragonal
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Crystal Class |
Positive Uniaxial
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Hygroscopic Susceptibility |
None
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Coefficient of Thermal Expansion (/K) at 313K
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||C: 9.2X10-6
⊥C: 7.1X10-6 |
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Thermal Conductivity (W/m·K) at 273K
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||C: 13.0
⊥C: 9.0 |
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Refractive Indices |
no=2.555, ne=2.836 at 690nm
no=2.454, ne=2.71 at 1530nm
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Density (g/cm3) |
4.25
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Mohs Hardness |
6.2
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Table 1: Rutile physical and optical properties
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