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634735

Sigma-Aldrich

Lanthanum aluminum oxide

single crystal substrate, <100>, ≥99.99% trace metals basis

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Synonym(s):
Lanthanum aluminate
Linear Formula:
LaAlO3
CAS Number:
12003-65-5
Molecular Weight:
213.89
EC Number:
234-433-3
MDL number:
MFCD00144550
UNSPSC Code:
12352303
PubChem Substance ID:
24882648
NACRES:
NA.23

description

single side polished

Assay

≥99.99% trace metals basis

dielectric constant

~25

reaction suitability

reagent type: catalyst
core: lanthanum

size

10 mm × 10 mm × 0.5 mm

mp

2080 °C (lit.)

density

6.52 g/mL at 25 °C (lit.)

semiconductor properties

<100>

SMILES string

O=[Al]O[La]=O

InChI

1S/Al.La.3O

InChI key

KJXBRHIPHIVJCS-UHFFFAOYSA-N

Features and Benefits

Single crystal lanthanum aluminate substrate lattices have a good lattice match with most perovskite-structured materials. It is an excellent substrate for the epitaxial growth of magnetic and ferro-electric thin films and high-temperature superconductors. Due to its dielectric properties it is also posses properties for low-loss microwave and dielectric resonance applications.

Physical form

Rhombohedral at 25 °C (a = 5.357 Å, c = 13.22 Å); Cubic at >435 °C (a = 3.821 Å)

Other Notes

thermal expansion = 10 × 10-6/°C; loss tangent at 10 GHz = ~3 × 10-4 @ 300 K, 0.6 × 10-4 @ 77 K; insoluble in mineral acids at 25 °C, soluble in H3PO3 at >150 °C

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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