• Updated price list is effective since January 2008
  • New natural rough from Russia
    • New Colombian Emerals Colour in Corundum
  • 5 New Colours in Cubic Zirconia (Paraiba, Canary, Lime, Opal Brown etc.)
  • Sital (nanocrystal) of green, blue and black colours








Synthetic ZnO Single Crystals

Single crystals of ZnO are grown by hydrothermal method in hemihedral direction (0001) . The obtained crystals are measuring up to 50 mm. They are featured by good optical homogeneity, law impurity content and steady technical parameters. ZnO belongs to “strong” piezo-electrics having semiconductor properties. Unit cell parameters of ZnO are near to them of GaN.

ZnO is used in: acoustoelectronics (dirigible SAW filters), piezo-engineering (chemical and medical sensors) and optics (substrates for semiconductor lasers).
Specification
Symmetry class: P63mc
Cell parameters, Е: a=b=3.2495, c=5.2069
Melt point, °C: 1975
Density, g/cm3: 5.66
Communication range: 0.4 - 0.6 µ > 50% for 2 mm
Hardness (Mohs'): 4
Dielectric constants:
ε11T/ε0 8,3
ε33T/ε0 8.8
Piezoelectric constants, (x10-12 q/N):
  d15 = -13.9 k33=0.408
  d31 = -5.2 k31=0.189
 

d33 = 10.6 k15=0.282

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