Strontiumtitanate SrTiO3-Crystal Substrates Description
Strontium titanate (SrTiO3) single crystals possess lattice parameters that correspond to many materials with a perovskite crystal structure. This characteristic renders them commonly employed as crystal substrates for the epitaxial deposition of various oxide thin films. They are also used as substrates for superconducting thin films, given that SrTiO3 and the Y-Ba-Cu-O system (a = 3.89 Å) exhibit comparable lattice constant values.

Strontiumtitanate SrTiO3-Crystal Substrates Specifications
Crystal Structure
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cubic, perovskite
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Molar Mass (g/mol)
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183.49
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Growth Method
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Vernue (flame) method
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Purity (%)
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>99.9
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Density (g/cm3)
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5.11
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Hardness
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6 – 6.5 Mohs
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Chemical Resistance
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Insoluble in water
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Sizes
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5x5 mm, 5x10 mm, 10x10 mm, 20x20 mm. Custom sizes and orientations available on request
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Thickness
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0.5 mm, 1.0 mm
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Polishing
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Single-side polished (SSP) or double-side polished (DSP), epi-ready surface Ra < 0.5 nm
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Orientation
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(100), (110), (111) ±0.5°
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Packaging
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Packaged in a class 100 plastic bag in a class 1000 clean room
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Strontiumtitanate SrTiO3-Crystal Substrates Applications
SrTiO3 single crystal of strontium titanate is also employed for specialised optical windows and as a high-quality sputter target. It is applicable to various thin film deposition techniques such as magnetron sputtering, pulsed laser deposition (PLD), evaporation, MOCVD, CVD and laser molecular beam epitaxy (laser-MBE). The films produced on SrTiO3 substrates exhibit defined properties, for example Tc > 90 K and Jc ≥ 1 000 000 A/cm².