Barium Titanate
BaTiO3

Crystal properties

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(εer)

εea=3000 εec=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°