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Single crystal quartz wafers are ideal for use as substrates for thin film deposition and are also suitable for many optical applications. Quartz single crystal wafers and substrates are also used as microwave filters in wireless communication.
MSE Supplies offers both standard and custom-made quartz wafers and substrates.
Typical Material Properties
Purity
Optical grade: 99.99%
Crystal Structure and lattice parameters
Hexagonal
a= 4.914 Å
c = 5.405 Å
Growth Method
Hydrothermal method
Hardness
7.0 Mohs
Density
2.684 g/cm3
Melt Point
1610 deg C (phase transition point: 573.1 °C)
Specific heat
0.18 cal/g
Thermoelectric Constant
1200 mV / °C @ 300 °C
Thermal conductivity
0.0033 cal/cm/ °C
Thermal expansion coefficient, (CTE) (x10^-6/ K)
perpendicular to Z axis: 13.71
parallel to Z axis: 7.48
Refractive Index
1.544
Q value
Acoustic velocity, SAW Frequency constant, BAW Piezoelectric coupling ,
1.8 x 10^6 minimum
3160 ( m/sec ) 1661 ( kHz/mm )
K2 (%) BAW: 0.65 SAW: 0.14
Inclusion
IEC Grade II
Standard Quartz Wafer Specifications
Quartz Crystal Orientation
Y, X, Z, AT or ST cut. The cut angle can be rotated to any value in the in the range of 30 deg ~ 42.75 deg upon request.
Primary flat: orientation specified by customer Secondary Flat: orientation specified by customer.
Seed: located in the center with width 66mm
Polished surface
Epi-ready polished on one side or two sides to Ra
Working Area: Wafer diameter minus 3 mm (edge exclusion)
BOW:
No chips out on the working area. At the edge, chip width
Pits and scratches:
Standard Th
$34.95
$ 15 .99 $15.99