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* Welcome To MgAl₂O₄ Crystal *
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MgAl₂O₄ (Spinel )

MgAl2O4 ( spinel ) single crystal, grown with Czochralski method, is used widely for bulk acoustic wave and microwave devices and fast IC epitaxial substrates. It is also found that MgAl2O4 is a good substrate for III-V nitrides device.

Physical Properties:

Structure	Cubic: a = 8.083 Å
Density	3.64 g/cm³
Melt Point	2130 ^oC
Hardness	8.0 ( Mohns)
Thermal expansion	7.45 (x10^-6/ ^oC)
Phase Velocity	6500 m/s at (100> shear wave
Propagation loss	6.5 dB/ms
Typical growth direction	<100> and <110>

Standard Products:

As-grown boule <100> ori. ± 0.5^o

35 mm dia x 60 mm length

As-cut blank <100>, <111> , <110>± 0.5^o

32 mm dia x 0.7 mm with <011>OF

Epi -polished substrates <100>, <111> , <110>± 0.5^o

1 or 2 sides polished Ra< 8 Å

32 mm dia x 0.5 mm,1" dia x 0.5 mm

10x10x0.5 mm

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