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634735 Sigma-Aldrich

Lanthanum aluminum oxide

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

Synonym: Lanthanum aluminate



Related Categories Alternative Energy, Aluminates, Aluminum, Catalysis and Inorganic Chemistry, Ceramics,
description   single side polished
assay   ≥99.99% trace metals basis
dielectric constant   ~25
size   10 mm × 10 mm × 0.5 mm
mp   2080 °C (lit.)
density   6.52 g/mL at 25 °C (lit.)
semiconductor properties   <100>



1 ea in rigid mailer

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 & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


Building and Engineering Micro/Nano Architectures of Single-Walled Carbon Nanotubes for Electronic Applications

1Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02115, USA 2Department of Physics, Northeastern University, Boston, MA 02115, USA 3Department of Mechanical E...
Ji Hao,1 Hyunyoung Jung,1 Younglae Kim,1 Bo Li,1,3 Swastik Kar,2 Yung Joon Jung1*
Material Matters, 2017, 12.1
Keywords: Chromatin immunoprecipitation, Environmental, Nanotubes, Redox Reactions, Reductions, transformation

Deposition Substrates and Silicon Wafers

Successful deposition of materials often depends on the proper substrates, with a good lattice match and a clean, even surface. We are proud to offer a variety of new single crystal substrates and si...
Chemfiles Volume 4 Article 3
Keywords: Deposition, Diffraction, Semiconductor, Trace metal analysis, X-Ray diffraction

FePt Nanogranular Films for High Density Heat-assisted Magnetic Recording

Kazuhiro Hono, National Institute for Materials Research, Tsukuba 305-0047, Japan Email: kazuhiro.hono@nims.go.jp
Keywords: Deposition, Nucleic acid annealing

Recent Progress in Spintronic Materials

Soubantika Palchoudhury,1 Karthik Ramasamy,2* Arunava Gupta3* 1Civil and Chemical Engineering, University of Tennessee at Chattanooga, Chattanooga, Tennessee 37403, USA 2Center for Integrated Nanotec...
Soubantika Palchoudhury, Karthik Ramasamy, Arunava Gupta
By: Dr. Hui Zhu, Material Matters, 2016, 11.4
Keywords: Catalysis, Microscopy, Scanning electron microscopy, Semiconductor, Transmission electron microscopy

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