Barium Titanate (BaTiO3)
Crystal properties |
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Crystal Structure | Tetragonal(4m) 13oC<T<132oC | ||
Cell parameter | a=3.99Å, c=4.04Å, (at 26 oC) | ||
Melting Point | 1891 oK | ||
Density. | 6.06 g/cm3 (at 26 oC) | ||
Specific Heat | 0.527 J/g • k (300°K) | ||
Thermal conductivity | 6 W/m • k (300°K) | ||
Thermal expansion (10-6k-1) | 15.7??a 6.2??c | ||
Dielectric constant(?er) | ?ea=3000 ?ec=800 | ||
Hardness (Mohs) | 4.5 | ||
Growth Method | TSSG (Top Seeded Solution Growth) | ||
Index of Refraction | 515 nm | 633 nm | 800 nm |
no | 2.4912 | 2.4160 | 2.3681 |
ne | 2.4247 | 2.3630 | 2.3235 |
Transmission wavelength | 0.43 - 6.30 um | ||
Electro Optic Coefficients. | rT13 = 8+ / -2 pm/V | ||
rT33 = 105-/+10 pm/V | |||
rT42 = 1300+ / -100 pm/V | |||
Reflectivity of SPPC ( at 0 deg. cut ) | 50-70 % (Ce: BaTiO3) for lamda = 515 nm | ||
40-60 % (PureBaTiO3) for lamda = 515 nm | |||
50-80 % (Ce: BaTiO3) for lamda = 633 nm | |||
40-60 % (PureBaTiO3) for lamda = 633 nm | |||
Two-wave mixing coupling constant. | 10-40 cm-1 | ||
Absorption loss Lamda: a : |
515 nm 0.285cm-1 |
633 nm 0.108cm-1 |
800 nm 0.033cm-1 |
Wavelength range for photo refractive effect | Undoped BTO | for visible | |
Ce: BTO | 480-780nm | ||
Rh: BTO | 720-1060nm | ||
Specifications | |||
Standard Size | 10x10, 10x5, | 10x3, 5x5 mm | |
Thickness | 0.5mm, 1.0mm | ||
Polishing | one or two side polished | ||
Bulk | 5 x 5 x 5 mm | 4 x 4 x 4 mm | 3 x 3 x 3 mm |
0° or 45° cut, 2 - 6 faces polished | |||
Orientation | <100>, <110>, <001>, <111> | ||
Orientation accuracy | ± 0.5° |
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