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Lanthanum Aluminate (LaAlO3)

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.

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

Specification

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)

Package

100 clean bag, 1000 exactly clean room
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