Barium Titanate
BaTiO3
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Chemical name
Barium Titanate |
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Chemical formula
BaTiO3 |
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Melting point [°C]
1625 |
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Crystal system
tetragonal |
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Crystal Class
4/m (10 °C < T < 132 °C) |
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Unit cell
a [Å]:3.99 b [Å]:3.99 c [Å]:4.04 (at 26 °C) |
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Molecular weight [g/mol]
233.19 |
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Mohs hardness
4.5 |
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Density [g/cm3]
6.08 (at 25 °C) |
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Refractive Index
n0=2.4912 (515 nm), 2.4160 (633 nm), 2.3681 (800 nm); ne=2.4247 (515 nm), 2.3630 (633 nm), 2.3235 (800 nm) |
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Piezoelectric crystals |
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Termal conductivity [W/m/K]
6 (300 K) |
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Thermal expansation coefficient [(10^(-5))/K]
15.7 || ?a; 6.2 || ?c |
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Specific heat [J/(kg*K)]
0.527 (300 K) |
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Crystal growth method
Top seeded solution growth (TSSG) |
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Transmission range
0.43 - 6.30 μm |
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Orientation
<100>, <110>, <001>, <111> |
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Electro optic coefficients
rT13 = 8±2 pm/V; rT33 = 105±10 pm/V; rT42 = 1300±100 pm/V |
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Reflectivity of SPPC (at 0 deg. Cut)
40-60% (PureBaTiO3) at 515 nm; 50-80% (Ce:BaTiO3) at 633 nm; 40-60% (PureBaTiO3) at 633 nm |
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Two wave mixing coupling constant
10-40 cm^(-1) |
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Absorption loss [cm^(-1)]
0.285 (at 515 nm); 0.108 (at 633 nm); 0.033 (at 800 nm) |
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Wavelength range for photo refractive effect
visible range for undoped BTO; 480-780 nm for Ce:BTO; 720-1060 nm for Rh:BTO |
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Specifications |
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Standard size [mm]
10x10; 10x5, 10x3, 5x5 |
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Thickness
0.5, 1.0 mm |
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Polishing
one or two side polished |
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Bulk
5x5x5 mm; 4x4x4 mm; 3x3x3 mm; 0° or 45° cut, 2 - 6 faces polished |
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Orientation accuracy
± 0.5 deg. |
