We can provide high temperature superconducting thin film substrate, magnetic thin films and ferroelectric thin film substrate, semiconductor crystal, optical crystal, laser crystal materials, at the same time provide orientation, crystal cutting, grinding, polishing and other processing services .
Highly Oriented Pyrolytic Graphite, HOPG
Parameters :
Density：2.250-2.266 g/cm3
Level Spacing：0.3344-0.3359 nm
Mosaic spread：0.2-5.0°FWHM
Thermal Conductivity：1400-1800W/m·k（∥）
8W/m·k（⊥）
Cofficient of thermal expansion：20×10-6（⊥）
ElectricalResistivity：3.5-4.5×10-5Ω/cm （∥）
The HOPG supplied by us has Grade of A/B/C ,which have difference on the Mosaic Degree .
Grade A : 0.5°±0.1°
Grade B:0.8°±0.2°
Grade C:3-5°
Currently we can supply the maximum dimension of 40*40*1.5mm
| Product Grade | Mosaic spread ( △δ ) | Product Size |
| A Grade | △δ : 0.5 ± 0.1 | 20 x 20 x (1.6~2.0) mm |
| 20 x 20 x 1.0 mm | ||
| 10 x 10 x 1.0 mm | ||
| B Grade | △δ : 0.8 ± 0.2 | 30 x 30 x (1.6~2.0) mm |
| 20 x 20 x (1.6~2.0) mm | ||
| 20 x 20 x 1.0 mm | ||
| 10 x 10 x 1.0 mm | ||
| 5 x 5 x 1.0 mm | ||
| C Grade | △δ : > 1.5 | 30 x 30 x (1.6~2.0) mm |
| 20 x 20 x (1.6~2.0) mm | ||
| 20 x 20 x 1.0 mm | ||
| 10 x 10 x 1.0 mm | ||
| 5 x 5 x 1.0 mm |
