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钛酸钡单晶(一种铁电材料)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


标准 BTO晶体产品 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


 

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