Difference between revisions of "Seifertite"
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{{todo|find out if this polymorph is stable at ambient pressure (and room temperature). It certainly is sable as inclusion at room temperature.}} | {{todo|find out if this polymorph is stable at ambient pressure (and room temperature). It certainly is sable as inclusion at room temperature.}} | ||
| − | Seifertite might be almost as interesting as sthishovite as potenial [[base material]] for [[gemstone based | + | Seifertite might be almost as interesting as sthishovite as potenial [[base material]] for [[gemstone based metamaterial]]s. <br> |
Only diminished by its slightly lower symmetry (orthorhombic instead of tetragonal). | Only diminished by its slightly lower symmetry (orthorhombic instead of tetragonal). | ||
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| + | == Same structure with other elements == | ||
There is a lead compound with the same structure as seifertit. <br> | There is a lead compound with the same structure as seifertit. <br> | ||
It's called [https://en.wikipedia.org/wiki/Scrutinyite scrutinyte] (PbO<sub>2</sub>). | It's called [https://en.wikipedia.org/wiki/Scrutinyite scrutinyte] (PbO<sub>2</sub>). | ||
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| + | Given silicon (Si) an lead (Pb) both form the same structure the elements between germanium (Ge) and tin (Sn) might very well too. | ||
| + | Even if they do not form naturally decently metastable [[neo-polymorph]]s may enforcable via [[mechanosynthesis|mechanosynthetic]] synthesis. | ||
== Related == | == Related == | ||
Revision as of 19:33, 21 June 2020
Seifertite is polymorph of SiO2 with a very high density ( 4.294 g/ccm ) and probably hardness.
It's similar to stishovite in these aspects.
(TODO: find out if this polymorph is stable at ambient pressure (and room temperature). It certainly is sable as inclusion at room temperature.)
Seifertite might be almost as interesting as sthishovite as potenial base material for gemstone based metamaterials.
Only diminished by its slightly lower symmetry (orthorhombic instead of tetragonal).
Same structure with other elements
There is a lead compound with the same structure as seifertit.
It's called scrutinyte (PbO2).
Given silicon (Si) an lead (Pb) both form the same structure the elements between germanium (Ge) and tin (Sn) might very well too. Even if they do not form naturally decently metastable neo-polymorphs may enforcable via mechanosynthetic synthesis.
Related
- Stishovite – simlar density and high hardness (Mohs 8.5 to 9.5)
- Silicon
External links
- Wikipedia seifertite
- Structure of the unit cell in 3D: [1]
