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769401

Sigma-Aldrich

Hafnium(IV) oxide

pellets, diam. × thickness 13 mm × 5 mm

Synonym(s):

Hafnia

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About This Item

Empirical Formula (Hill Notation):
HfO2
CAS Number:
Molecular Weight:
210.49
EC Number:
MDL number:
UNSPSC Code:
12352303
NACRES:
NA.23

form

pellets

diam. × thickness

13 mm × 5 mm

impurities

≤0.1% PBB (polybrominated biphenyls)
≤0.1% PBDE (polybrominated diphenyl ethers)

density

9.68 g/mL at 25 °C (lit.)

cation traces

Cd: ≤0.01%
Co: ≤0.0005%
Cr: ≤0.005%
Cu: ≤0.0005%
Fe: ≤0.005%
Hg: ≤0.1%
Pb: ≤0.1%
Ti: ≤0.005%
V: ≤0.005%
Zr: ≤0.5%

SMILES string

O=[Hf]=O

InChI

1S/Hf.2O

InChI key

CJNBYAVZURUTKZ-UHFFFAOYSA-N

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Application

High dielectric constant of hafnia makes it suitable for application in metal oxide based semiconductor devices. It also finds applications as optical coating materials

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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Recent progress in ab initio simulations of hafnia-based gate stacks
Zhu, H., et al.
J. Mater. Sci., 47(21), 7399-7416 (2012)
Dual wavelength laser-induced damage threshold measurements of alumina/silica and hafnia/silica ultraviolet antireflective coatings.
Mrohs, M., et al.
Applied Optics, 55(1), 104-109 (2016)

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