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12055-23-1 - Hafnium(IV) oxide, Spectrographic Grade, 99.9% (metals basis excluding Zr), Zr typically <80ppm - 11836 - Alfa Aesar

11836 Hafnium(IV) oxide, Spectrographic Grade, 99.9% (metals basis excluding Zr), Zr typically <80ppm

Codice CAS
12055-23-1
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
2g 86,20
10g 297,00
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Hafnium(IV) oxide, Spectrographic Grade, 99.9% (metals basis excluding Zr), Zr typically <80ppm

MDL
MFCD00003565
EINECS
235-013-2

Proprietà chimiche

Formula
HfO2
Peso formula
210.49
Modulo
-325 Mesh Powder
Punto di fusione
2774°
Densità
9.68
Solubilità
Insoluble in water.

Applicazioni

Hafnium(IV) oxide is used in optical coatings and in advanced metal-oxide-semiconductor devices. It is used as a gate insulator in field-effect transistors due to its high dielectric constant. It plays an important role as a possible candidate for resistive-switching memories, as a refractory material in the insulation of devices such as thermocouples and as a high-κ dielectric in DRAM capacitors. Also, used in the preparation of hafnium tetrachloride.

Note

Incompatible with strong oxidizing agents.

Letteratura

Choi, J. H.; Mao, Y.; Chang, J. P. Development of hafnium based high-k materials—A review. Mater. Sci. Eng., R Rep. 2011, 72 (6), 97-136.

Zhu, H.; Tang, C.; Fonseca, L. R. C.; Ramprasad, R. Recent progress in ab initio simulations of hafnia-based gate stacks. J. Mater. Sci. 2012, 47 (21), 7399-7416.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni precauzionali: P260-P201-P280-P304+P340-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Merck
14,4588
Codice tariffe armonizzato
2825.90
TSCA
Yes

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