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AEM Deposition

Lanthanum Aluminate (LaAlO3)

Lanthanum Aluminate (LaAlO3)
Lanthanum Aluminate (LaAlO3)


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.

Physical Properties

Material LaAlO3
Crystal system Hexagonal (at room temperature); Cube (>435℃)
Lattice (A) Hexagonal a=5.3575, c=13.22;  Cubic a=3.821
Growth Method Czochralski
Hardness 6-6.5 (Mohns)
Melting point 2080℃
Density(g/cm3) 6.52 g/cm3
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 precision ±0.5°
Redirection the edge 2°(special in 1°)
Angle of crystalline Special size and orientation are avaiable for request
Ra: ≤5Å(5µm×5µm)


100 clean bag, 1000 exactly clean room
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