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SrTiO3 Substrate with Step Surface & Ti terminated (100) 10x10x0.5mm, 1 SP
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In stock
Item Number: STOa101005S1StepUS
Quantity Discounts
| Quantity | Amount |
| 50 to 99 | USD$236.55 |
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Step STO substrate is a atomically smooth SrTiO3 (100) with steps one unit cell in height was obtained by treating the crystal surface with a pH-controlled NH4F-HF solution. The homoepitaxy of SrTiO3 film on the crystal surface proceeds in a perfect layer-by-layer mode as verified by reflection high-energy electron diffraction and atomic force microscopy. Ion scattering spectroscopy revealed that the TiO2 atomic plane terminated the as-treated clean surface and that the terminating atomic layer could be tuned to the SrO atomic plane by homooepitaxial growth. This technology provides a well-defined substrate surface for atomically regulated epitaxial growth of such perovskite oxide films .
For more information on Step substrate, please refer to the article at
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Surface of SrTiO3 substrate after Step treatment (AFM)
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Surface of SrTiO3 substrate before Step treatment (AFM)
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Typical AFM picture of step STO substrate
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Substrate Specifications
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Typical Physical Properties
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Crystal Structure
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Cubic, a=3.905Å
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Growth Method
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Vernuil
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Density
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5.175 g/cm3
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Melt Point
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2080 oC
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Hardness
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6 ( Mohn)
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Thermal expansion
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10.4 (x10-6/ oC)
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Dielectric Constant
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~ 300
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Loss Tangent at 10 GHz
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~5x10-4 @ 300K , ~3 x10-4 @77K
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Color and Appearance
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Transparent (sometimes slightly brown based on annealing condition). No twins.
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Chemical Stability
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Insoluble in water
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