Products
Substrates & Bicrystals
I. Substrate single crystals for superconductivity
| Crystal | Structure | M.P. [°C] |
Dielectric constant | Growth Technique | Info |
|---|---|---|---|---|---|
| LaAlO3 | Rhombo a=3.790Å c=13.11Å |
2100 | 24.5 | CZ ø2" |
view |
| Th: LaAlO3 |
Cubic a=7.57Å |
2080 | 24.0 | CZ ø30mm |
view |
| MgO | Cubic | 2800 | 10 | ? | view |
| NdCaAlO4 | Tetrag. a=3.685Å c=12.12Å |
1850 | 19.5 | CZ ø30mm |
|
| NdGaO3 | Orthor. a=5.43Å b=5.50Å c=7.71Å |
1600 | 25 | CZ ø2" |
view |
| SrLaAlO4 | Tetrag. a=3.756Å c=12.63Å |
1650 | 16.8 | CZ ø20mm |
|
| SrLaGaO4 | Tetrag. a=3.84Å c=12.68Å |
1600 | / | CZ ø20mm |
|
| SrTiO3 | Cubic a=3.90Å |
2080 | 300 | Verneuil ø20mm |
view |
| YAlO3 | Orthog. a=5.176Å b=5.307Å c=7.355Å |
1870 | 16`20 | CZ ø30mm |
|
| YSZ | Cubic a=5.41Å |
~2500 | 27 | Flux | view |
II. Substrate bicrystals for superconductivity
| Material | SrTiO3 | MgO | Al2O3 | YSZ | Nb:SrTiO3 |
|---|---|---|---|---|---|
| Dimensions (mm) | 10 x 10 x 0.5 | 10 x 10 x 0.5 | 10 x 10 x 0.5 | 10 x 10 x 0.5 | 10 x 10 x 0.5 |
| Surface Orientation | (100) ± 1° | (100) ± 1° | (1012) ± 1° | (100) ± 1° | (100) ± 1° |
| Surface Finish | one side polished | ||||
| Junction Angle | 24° ± 1° 36.8° ± 1° |
24° ± 1° | 24° ± 1° | 24° ± 1° 36.8° ± 1° |
24° ± 1° 36.8° ± 1° |
| Flatness | ¼ | ¼ | ½ | ¼ | ¼ |
| Surface Roughness | Ra 10Å, Rmax 30Å |
Ra 10Å, Rmax 50Å |
Ra 10Å, Rmax 50Å |
Ra 10Å, Rmax 30Å |
Ra 10Å, Rmax 30Å |
| Crystal Structure | cubic | cubic | hexagonal | cubic | cubic |
| a Lattice Constant (Å)b c |
3.905 | 4.213 | 4.758 12.99 |
5.139 | 3.905 |
| Phase Transition | tetragonal < 110K |
tetragonal < 110K |
|||
| Dielectric Constant (εr) | 310 | 10 | 9 | 27 | 310 |
| Coefficient of Expansion (10-6/°C) |
11.1 | 14.2 | 7.5 | 10.3 | 11.1 |
| Melting Point (°C) | 2080 | 2800 | 2030 | 2500 | 2080 |
For other substrates and specifications please demand a quotation. The standard Nb doping amounts of Nb:SrTiO3 are 0.05 and 0.5 wt %. Surface roughness was measured using TALYSTEP (80µm width).