Hafnium(IV) silicate
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Preferred IUPAC name
Hafnium(IV) silicate | |
Systematic IUPAC name
Hafnium(4+) silicate | |
Identifiers | |
3D model (
JSmol ) |
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ChemSpider | |
PubChem CID
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Properties | |
HfO4Si | |
Molar mass | 270.57 g·mol−1 |
Appearance | Tetragonal crystal[1] |
Density | 7.0 g/cm3 |
Melting point | 2,758 °C (4,996 °F; 3,031 K)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Hafnium silicate is the hafnium(IV) salt of silicic acid with the chemical formula of HfSiO4.
dielectric constant. Furthermore, it increases the crystallization temperature of amorphous films and further increases the material's thermal stability with Si at high temperatures.[3] Nitrogen
is sometimes added to hafnium silicate for improving the thermal stability and electrical properties of devices.
Natural occurrence
Hafnon is the natural form of hafnium orthosilicate. Its name suggests the mineral is the Hf analogue of much more common zircon. Hafnon is the only currently known confirmed mineral of hafnium (i.e., hafnium-dominant one). Hafnon and zircon form a solid solution. Hafnon is a solely pegmatitic mineral and it occurs in largely fractionated (complex-genesis/history) pegmatites.[4]
References
- ^ ISBN 1-4398-5511-0.
- .
- .
- ^ "Hafnon".