Thin Film Substrate
Lanthanum Aluminate (LaAlO3)
Introduction:Lanthanum Aluminate (LaAlO3) is a single crystal, which is the most important material in industrialization and large-size high-temperature superconducting thin flim substrate. It can be obtained 2'' diameter and lager single crystal and substrates by Czochralski growth method. It is well matched with YBaCuO high-temperature superconducting thin flim materials in lattice with lower dielectric constant, low loss microwave. There are great potentail applications in production of high-temperature superconducting microwave electronic devices.
|Crystal system||Hexagonal (at room temperature); Cube (>435℃)|
|Lattice (A)||Hexagonal a=5.3575, c=13.22; Cubic a=3.821|
|Thermal expansion||9.4 (x 10-6/℃)|
|Permittivity||ε = 21|
|Loss tangent (10ghz)||~ 3 × 10 -4 @ 300k, ~ 0.6 × 10 -4 @ 77k|
|Color and appearance||Brown-yellow to brown polishing a substrate with natural twinned domain by annealing conditions|
|Chemical stability||Insoluble in Mineral acid at room temperature, souble in h3po4 when temperature is higher than 150℃|
|Feature||Suitable fpr microwave electronics|
|Size||10x3, 10x5, 10x10, 15x15, 20x20,Dia 15, Dia 20, Dia 1'', Dia 2'', Dia 2.6''|
|Thickness||0.5 mm, 1.0 mm|
|Polished||SSP or DSP|
|Orientation||<100>, <110>, <111>|
|Redirection the edge||2°（special in 1°）|
|Angle of crystalline||Special size and orientation are avaiable for request|
Package100 clean bag, 1000 exactly clean room
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