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Aluminum oxide

Name: Aluminum oxide
Brand: ALDRICH

single crystal substrate, <0001>

Synonym(s):

Sapphire, Alumina

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About This Item

Linear Formula:

Al₂O₃

CAS Number:

1344-28-1

Molecular Weight:

101.96

EC Number:

215-691-6

MDL number:

MFCD00003424

UNSPSC Code:

12352303

eCl@ss:

38120402

PubChem Substance ID:

24882698

NACRES:

NA.23

description

Crystallographic D spacing ((0001) - c plane: 2.165 Angstrom)
Crystallographic D spacing ((1011) - s plane: 1.961 Angstrom)
Crystallographic D spacing ((1040) - m plane: 1.375 Angstrom)
Crystallographic D spacing ((1102) - r plane: 1.740 Angstrom)
Crystallographic D spacing ((1120) - a plane: 2.379 Angstrom)
Crystallographic D spacing ((1123) - n plane: 1.147 Angstrom)
single side polished

Quality Level

100

form

single crystal substrate

hardness

9 mohs

L × W × thickness

10 mm × 10 mm × 0.5 mm

mp

2040 °C (lit.)

semiconductor properties

<0001>

SMILES string

O=[Al]O[Al]=O

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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Related Categories

Oxides & Ceramics

Features and Benefits

Common substrate for III-V nitrides as well as many other epitaxial films.

Physical properties

thermal expansion = 7.5 × 10^-6 /°C; specific heat = 0.10 cal/°C; thermal conductivity = 46.06 @ 0 °C, 25.12 @ 100 °C, 12.56 @ 400 °C (W/m,K); dielectric constant = ~9.4 @ 300 K at A axis, ~11.58 @ C axis; loss tangent at 10 GHz < 2 × 10^-5 at A axis, 5 × 10^-6 at C axis

Physical form

Crystalline, hexagonal (a = 4.758 Å, c = 12.992)

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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[Au5Mes5]: improved gram-scale synthesis and its use as a convenient precursor for halide-free supported gold nanoparticles.

G Siddiqi et al.

Dalton transactions (Cambridge, England : 2003), 44(32), 14349-14353 (2015-07-23)

A simple one-step and gram-scale synthesis of [Au5Mes5] from AuCl3 was developed, and this molecular precursor was used to generate Au nanoparticles on SiO2 and Al2O3. While [Au5Mes5] does not react with surface silanols and is only physisorbed, its incipient

Performance enhancement of metal-oxide-semiconductor tunneling temperature sensors with nanoscale oxides by employing ultrathin Al2O3 high-k dielectrics.

Chien-Chih Lin et al.

Nanoscale, 5(17), 8090-8097 (2013-07-25)

We demonstrated a promising route for enhancing temperature sensitivity, improving saturation voltage, and reducing power consumption of the MOS(p) tunneling temperature sensors by introducing ultrathin Al2O3 into the dielectric stacks. Detailed illustrations of the working mechanism and device concept are

Where bio meets nano: the many uses for nanoporous aluminum oxide in biotechnology.

Colin J Ingham et al.

Biotechnology advances, 30(5), 1089-1099 (2011-08-23)

Porous aluminum oxide (PAO) is a ceramic formed by an anodization process of pure aluminum that enables the controllable assembly of exceptionally dense and regular nanopores in a planar membrane. As a consequence, PAO has a high porosity, nanopores with

Solvent exfoliation of electronic-grade, two-dimensional black phosphorus.

Joohoon Kang et al.

ACS nano, 9(4), 3596-3604 (2015-03-19)

Solution dispersions of two-dimensional (2D) black phosphorus (BP)--often referred to as phosphorene--are achieved by solvent exfoliation. These pristine, electronic-grade BP dispersions are produced with anhydrous organic solvents in a sealed-tip ultrasonication system, which circumvents BP degradation that would otherwise occur

Improved arsenic(III) adsorption by Al2O3 nanoparticles and H2O2: evidence of oxidation to arsenic(V) from X-ray absorption spectroscopy.

Linda Önnby et al.

Chemosphere, 113, 151-157 (2014-07-30)

We have investigated the oxidation of inorganic As(III) with H2O2 catalysed by Al2O3, using X-ray absorption near-edge structure and extended X-ray absorption fine structure spectroscopy. The effects of different reaction conditions (pH, time and initial H2O2 concentration) were also studied

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