Lanthanum Aluminate LaAlO3

Lanthanum aluminate LaAlO3 is an oxide ceramic material with a perovskite structure, and is a high-performance material mainly used as a substrate for epitaxial growth.

Characteristics

※The precise system is trigonal (a=0.5357 nm, α=60.1°), but it is generally treated as pseudo-cubic or hexagonal.
Composition LaAlO3
Crystal system Trigonal (Pseudo-cubic) ※
Crystal structure Pseudo-perovskite
Lattice constant a=0.379 nm (Pseudo-cubic)
Melting point 2100 ℃
Crystal growth method CZ method
Density 6.52 g/cm3 (20 ℃)
Dielectric constant 15～22 (300 K, 1MHz)
Thermal expansion coefficient 12.6×10-6/℃
Phase transition Approx. 420℃
(Trigonal ⇔ Cubic)
Twin crystal Generated by phase transition

Standard Specs

※If you are looking for other specs, please contact us.
Size
(Outer size tolerance: ±0.1 mm / Thickness tolerance: ±0.05 mm)		 10×10×0.5 t
15×15×0.5 t
Orientation
(Tolerance: ±0.5°）		 (100), (110)
※Pseudo-cubic
Polishing One-side / Both-side
Surface roughness Ra≦1.0 nm
Rmax≦5.0 nm