Difference between revisions of "Seifertite"
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Seifertite might be almost as interesting as sthishovite as potenial [[base material]] for [[gemstone based metamaterial]]s. <br> | 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). |
| − | == Same structure with other elements == | + | Note that there are better less confusing depictions of the unit cells than the ones currently (2024) on wikipedia. |
| + | |||
| + | == Same structure with other elements - potential for [[neo-polymorph]]s == | ||
There is a lead (Pb) compound with the same structure as seifertit. <br> | There is a lead (Pb) compound with the same structure as seifertit. <br> | ||
| Line 14: | Line 16: | ||
Given silicon (Si) an lead (Pb) both form the same structure the elements between germanium (Ge) and tin (Sn) might very well too. <br> | Given silicon (Si) an lead (Pb) both form the same structure the elements between germanium (Ge) and tin (Sn) might very well too. <br> | ||
| − | Even if they do not form naturally decently metastable [[neo-polymorph]]s may enforcable via [[mechanosynthesis|mechanosynthetic]] synthesis. | + | Even if they do not form naturally decently metastable [[neo-polymorph]]s may be enforcable via [[mechanosynthesis|mechanosynthetic]] synthesis. |
| + | |||
| + | [[Lead]] (Pb) forms a stable mineral with this structure. <br> | ||
| + | For [[titanium]] (Ti), [[tin]] (Sn) see papers in external link references. <br> | ||
| + | This may open up the possibility of checkerboard mixing series [[neo-polymorph]]s eventually making the seifertite structure more stable but retaining hardness. <br> | ||
| + | <small>Just like in the case with [[stishovite]] and [[rutile]] there is the [[neo-polymorph]]ic checkerboard mixing series of the [[mechadensite]]s.</small> <br> | ||
| + | {{wikitodo|fins a name for these neo-polymorphic mixing series}} | ||
== Related == | == Related == | ||
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* [[Base materials with high potential]] | * [[Base materials with high potential]] | ||
* [[Silicon]] | * [[Silicon]] | ||
| + | * '''[[Base materials with high potential]]''' | ||
== External links == | == External links == | ||
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* Wikipedia [https://en.wikipedia.org/wiki/Seifertite seifertite] | * Wikipedia [https://en.wikipedia.org/wiki/Seifertite seifertite] | ||
* Structure of the unit cell in 3D: [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Seifertit] | * Structure of the unit cell in 3D: [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Seifertit] | ||
| + | ---- | ||
| + | * [https://www.researchgate.net/publication/51939161_Dielectric_properties_and_lattice_dynamics_of_a_-PbO_2_-type_TiO_2_The_role_of_soft_phonon_modes_in_pressure-induced_phase_transition_to_baddeleyite-type_TiO_2 Paper on titanium oxide in seifertite/scrutinyite structure.] '''(better unit cell depiction than usually)''' | ||
| + | * [https://pubs.acs.org/doi/10.1021/acs.cgd.7b00569 Paper on tin oxide in seifertite/scrutinyite structure.] | ||
[[Category:Base materials with high potential]] | [[Category:Base materials with high potential]] | ||
Latest revision as of 11:01, 22 March 2024
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).
Note that there are better less confusing depictions of the unit cells than the ones currently (2024) on wikipedia.
Same structure with other elements - potential for neo-polymorphs
There is a lead (Pb) 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 be enforcable via mechanosynthetic synthesis.
Lead (Pb) forms a stable mineral with this structure.
For titanium (Ti), tin (Sn) see papers in external link references.
This may open up the possibility of checkerboard mixing series neo-polymorphs eventually making the seifertite structure more stable but retaining hardness.
Just like in the case with stishovite and rutile there is the neo-polymorphic checkerboard mixing series of the mechadensites.
(wiki-TODO: fins a name for these neo-polymorphic mixing series)
Related
- Stishovite – simlar density and high hardness (Mohs 8.5 to 9.5)
- Base materials with high potential
- Silicon
- Base materials with high potential
External links
- Wikipedia seifertite
- Structure of the unit cell in 3D: [1]
- Paper on titanium oxide in seifertite/scrutinyite structure. (better unit cell depiction than usually)
- Paper on tin oxide in seifertite/scrutinyite structure.
