Strontium Titanate Single Crystals(Furuuchi Chemical)


It is possible to control the carrier concentration and transmittance by doping, and this product is expected to contribute as a key device for optical networks with large capacity, ultra-high speed, and low power consumption.

Application Examples

Optical switches with PLZT thin film fabricated on Nb-doped SrTiO3 single crystal substrates can achieve lower control voltage, faster response, and lower polarization dependence, leading to increased capacity, ultra-high speed, and low power consumption of optical networks.

*PLZT:Pb1-xLa(x ZryTi1-y)1-x/4O3

Cross-sectional example image of optical switches with PLZT thin film

Benefits for Customers

  • Carrier concentration and transmittance can be controlled by Nb or La doping.
  • Larger crystals with a 2-inch diameter are expected to enable larger devices.
  • Crystal growth along with (110) and (111) as well as (100) is achieved.

Features of Strontium Titanate Single Crystals


Doping Amount and Carrier Concentration

Transmittance of STO substrate


What sizes are available?

The standard size is 10 mm x 10 mm, but we are working on increasing the size by growing large crystals, so please feel free to contact us.

Are Nb and La the only elements that can be doped?

Nb and La are the standard, but please contact us to discuss the possibility of doping other elements as well.

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