SrTiO3 Substrate

short description:

High temperature superconducting

Product Detail

Product Tags


SrTiO3 single crystal has good lattice structure of perovskite structure material. It is an excellent substrate material for epitaxy growth of HTS and most oxide films. It has been widely used in the research of high temperature superconducting thin films. It is also widely used in special optical windows and high quality sputtering targets.


Orientation: (100) +/-0.5 Deg
Edge orietation Indication: <001> +/-2 Deg avaiable as option with extra cost
Polish: One side EPI polished by CMP tecnology with less sub-surface lattice damage.
Pack: Packed in 100 grade plastic bag under 1000 class clean room.

Crystal Structure

Cubic, a=3.905 A

Growth Method




Melting Point(℃)


Hardness (Mho)


Thermal Expansion

10.4 (x10-6/ ℃)

Dielectric Constant

~ 300

Loss Tangent at 10 GHz

~5x10-4 @ 300K , ~3 x10-4 @77K

Color and Appearance

Transparent (sometimes slightly brown based on annealing condition).No twins

Chemical Stability

Insoluble in water

SrTiO3 Substrate Definition

The SrTiO3 substrate refers to a crystalline substrate made of the compound strontium titanate (SrTiO3). SrTiO3 is a perovskite material with a cubic crystal structure, which is characterized by a high dielectric constant, high thermal stability, and good lattice matching with many other materials.

SrTiO3 substrates are widely used in the fields of thin film deposition and epitaxial growth.  The cubic structure of SrTiO3 allows the growth of high-quality thin films with excellent crystalline quality and low defect density. This makes SrTiO3 substrates very suitable for growing epitaxial films and heterostructures for various applications.

The high dielectric constant of SrTiO3 makes it suitable for applications such as capacitors, memory devices, and ferroelectric thin films. Its thermal stability makes it suitable for high temperature applications.

Furthermore, the diverse properties of SrTiO3, such as its metallic conductivity at low temperatures and the possibility of inducing a superconducting state, make it useful for condensed matter physics research and the development of electronic and optoelectronic devices.

In summary, SrTiO3 substrates are crystalline substrates made of strontium titanate, which are commonly used in thin film deposition, epitaxial growth, and a wide range of electronic and optoelectronic applications due to their high dielectric constant, thermal stability, and good lattice matching properties.

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