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BaTiO3 - Barium Titanate Crystal

Description

BaTiO3 is a very unique crystal with superior photo-refractive and ferroelectric properties. MaTecK supplies both of substrate grade and photo refractive grade BaTiO3 single crystal with excellent quality and affordable price.

Typical Properties

Crystal Structure: Tetragonal (4m)
9°C < T < 130.5 °C
a=3.99 Å, c= 4.04 Å
Growth Method: Top Seeded Solution Growth
Melting Point: 1600 °C
Density: 6.02 g/cm3
Dielectric constants: ea = 3700, ec = 135 (unclamped)
ea = 2400, ec = 60 (clamped)
Index of Refraction:
l   515 nm 633 nm 800 nm
no   2.4921 2.4160 2.3681
ne   2.4247 2.3630 2.3235
Transmission wavelength: 0.45 ~ 6.30 µm
Electro Optic Coefficients: rT 13 = 11.7 ± 1.9 pm/V
rT 33 = 112 ± 10 pm/V
rT 42 = 1920 ± 180 pm/V
Reflectivity of SPPC ( at 0 deg. cut ): 50-70% (max. 77%) for l = 515 nm
50-80% (max: 86.8%) for l = 633 nm
Two-wave mixing coupling constant: 10-40 cm-1
Absorption loss:
l   515 nm 633 nm 800 nm
a   3.392 cm-1 0.268 cm-1 0.005 cm-1
 

Standard BTO Crystal Products

Refractive Grade BTO:
(Fully electric poled with single domain)
3x3x3 mm, 2-4 faces polished
5x5x5 mm, 2-6 faces polished
Substrate grade BTO:
(poled, but with domains)
5x5x1.0 mm, <100> or <001> Orientation
   1-2 sides polished
10x10x1.0 mm, <100> or <001> Orientation
   1-2 sides polished
 

BTO crystal must be stored in temperature above 10 °C to avoid phase transition which will cause twin or domain inside crystal

Other sizes and specifications on request