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Semiconductor Wafer Inc. can provide both single crystal SrTiO3 wafer and
conductive Nb doped SrTiO3 wafer in max. diameter up to 25 mm . With
excellent physical and mechanical properties , SrTiO3 has twin free crystal
structure and it's lattice contant can perfectly match to the common
superconductor materials , pure SrTiO3 substrate is the best choice for your
high Tc superconductor application . and the conductive single crystal Nb
doped SrTiO3 can be as an electrode for certain thin film and device
applications . Contact us for more information .
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SrTiO3 Wafer Feature :
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Excellent lattice match to superconductor materials
Superior mechanical properties
Stable dielectric constant
Excellent piezoelectric characteristics
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SrTiO3 Wafer Applications :
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High Tc superconductor
Microwave filter
Thin film growth
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Standard Single Crystal SrTiO3 Wafer
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Growth method
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Flame fusion ( Verneuil ) method
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Crystal structure
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Cubic
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Orientation
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<100> , <110> , <111>
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Dielectric constant
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300
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Lattice constant
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3.905 A
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Size
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dia25 , 5 x 5 , 10 x 10 , 20 x 20 mm
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Thickness
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0.5 mm , 1 mm
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Surface finish
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As cut , one side polished , two sides polished
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Surface roughness
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< 10 A
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Conductive Nb doped SrTiO3 Wafer
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Single crystal SrTiO3 can exhibit electric conductive by doping Nb
( Niobium ) different doped concentration ( 0.1 ~ 1 wt% ) will change
resistivity range from 0.001 to 0.1 ohm-cm , and this will be of benefit to
some thin film growth application .
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Nb doped SrTiO3
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Resistivity
( ohm-cm )
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Mobility
( cm2 / v.s. )
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Size available
( mm )
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Concentration ( 1.0 wt% )
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0.0035
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9.0
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5 x 5 x 0.5
10 x 10 x 0.5
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Concentration ( 0.7 wt% )
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0.007
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8.5
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5 x 5 x 0.5
10 x 10 x 0.5
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Concentration ( 0.4 wt% )
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0.05
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8.5
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5 x 5 x 0.5
10 x 10 x 0.5
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Concentration ( 0.1 wt% )
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0.08
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6.5
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5 x 5 x 0.5
10 x 10 x 0.5
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