In the face of increasing difficulties in supplying quartz crystals for strategic applications such as space, defense and medical, Cristal Innov has resumed European production of very high-quality quartz and wafers.
Bars
Bars are from pure Z-zone, with or without seed, Y0, or pre-oriented for a specified cut (AT, SC…)
Blanks or wafers
- Cuts (AT, SC, Z, X…)
- Lapped, single side or double side polished
- 5 mm to 150 mm
Customized products
Very high-quality quartz
Quality criteria according to IEC 60758 standard
Right-handed quartz only | ||
Infrared extinction coefficient: by Fourier Transform Infrared (FTIR) spectrometry | α3500cm-1 < 0,026 Equivalent à un α3585cm-1 < 0,015 ou α3410cm-1 < 0,075 | |
Inclusion density: by visual inspection under high intensity light with index liquid | 10 – 30 µm : N < 2 30 - 70 µm : N <1 70 - 100 µm : N <0 > 100 µm : N < 0 | |
Etch channel density by channels counting in an etched AT-cut slice | < 10/cm2
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Impurity level: By mass ICP-MS | Al, Fe, Na, K, Ca < 2 ppm | |
Dislocation density by X-ray topography | < 30/cm2
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Hydrothermal synthesis
Cristal Innov has specialized in the crystallization of very high-quality quartz, by mastering the material, the specific cuts, and their characterization.
Both very slow growth rates – inhibiting the formation of defects –, and reproducibility make it possible to produce high-performance crystals for piezoelectric applications:
- ultra-stable, low-noise resonators/oscillators
- SAW sensors, inertial navigation system (accelerometers, gyroscopes…)