Sapphire substrate is the popular substrates for III-V nitrides, superconductor and magnetic epi film due to less mis-matched lattice and stable chemical and physical properties
Wafer size: 10 mm x 10 mm x 0.43 mm thick
Orientation tolerance: +/-0.5 o. A plane orientation
Polished surface: substrate surface is EPI polished via a special CMP procedure with RA < 5 A
2 sides polished
Package: Each wafer is packed in 1000 class clean room with 100 grade plastic bag with wafer container
Precaution: R plane sapphire wafer is easy to cleave compared with C plane's. Please handle it with a care
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