BaTiO3 (BTO) 結晶
Barium Titanate single crystal is an excellent photorefractive material which has high SPPC (Self Pumped Phase Conjugation) reflection and two wave mixing (optical amplification) efficiency, it is important for information processing and image storage. Besides that it is also an important substrate material for some special film as its unique ferroelectric and other properties.
The followings are important for the use of BaTiO3,
both for the bulk device and substrate
- The tetragonal BaTiO3 single crystal (the useful phase for both photorefractive effect and substrate) will change the phase when its temperature is lower than 13℃ or higher than 125℃. So it is necessary to keep its temperature in the safe range during its using, storage and transportation.
- The extra force such as compacting, cracking will cause a phase transition.
- Poling is needed for (001) orientation substrate, while is not necessary for (100), (110), (111) orientations.
- Normally the maximum size for BaTiO3 substrate is 10x10mm; the thinnest thickness is 0.3mm.
Note: Rh doped BaTiO3 crystal is also available from CASTECH.
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- BaTiO3 (BTO) 結晶
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