SrTiO3 substrate

SrTiO3 Substrate

Strontium Titanate  or SrTiO3 single crystal provides a good lattice match to most materials with Perovskite structure.  It is an excellent substrate for epitaxial growth of HTS and many oxide thin films. Its lattice constant (3.905Å) fits the common high Tc superconductive material YBCO (3.88 Å) very well. It has twin-less crystal structure and very good physical and mechanical properties for film growth. It is suitable for various high Tc films such as YBCO, Bi-system, La-system and others.

Features

1 ) Good lattice match to most materials with Perovskite structure

2 ) Twin-less crystal structure

3 ) Good physical and mechanical properties

Applications

1 ) High Tc films for YBCO

2 ) High Tc films for Bi-system

3 ) High Tc films for La-system

Specifications

Materials

SrTiO3

Orientation

[100] or [110] or [111] < ±0.5°

Surface Finish

Single side polished (SSP) or Double sides polished (DSP)

Polished Side Roughness

< 0.5 nm

Typical Size

10 x 5 x 0.5 mm, 10 x 10 x 0.5 mm etc.

Dimension Tolerance

±0.1 mm or better

Thickness Tolerance

±0.05 mm or better

Maximum Size

Diameter 30 mm

Properties

Chemical Formula

SrTiO3

Crystal Structure

M6

Lattice Parameters

a = 3.90 Å  

Melting Point

2050 ℃

Density

5.175 g/cm3

Hardness

6 Mohs

Thermal Expansion Coefficient(/ ℃)

10.4 × 10^-6

Tangent Loss

~5×10^-4 (300k)  ~3×10^-4 (77k)

Dielectric Constants

300