634735

Lanthanum aluminum oxide

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

• 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

Properties

• 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

Description

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves