Timeline for Why does FCC crystalline forms form hexagonal crystalline structures during CVD?
Current License: CC BY-SA 4.0
10 events
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| Jan 5, 2023 at 10:31 | comment | added | uhoh | @AndiIacob you can also try the hex face of a hexagonal crystal like hexagonal boron nitride (as you've mentioned) or hexagonal silicon carbide, or even cleaved HOPG. | |
| Jan 5, 2023 at 10:26 | comment | added | uhoh | @AndiIacob The internal fcc(111) planes for a simple metal will generally have a hexagonal arrangement, and a flat fcc(111) surface there certainly can be hexagonal as well. However sometimes clean, annealed fcc(111) (as well as other) surfaces have surface reconstructions, the most famous being Au(111) 22×√3 herringbone reconstruction, (amenable to googling). I don't know about BCC but I can find out in a day or so. Si isn't simple fcc, but the Si(111) surface has a very interesting 7×7 reconstruction. | |
| Jan 5, 2023 at 9:54 | comment | added | Andi Iacob | @uhoh so this means there are no modifications needed to the substrate correct? Om effect, any FCC could theoretically be used to make hexagonal shapes? And BCC as well? | |
| Dec 30, 2022 at 5:03 | comment | added | uhoh | @AndiIacob for that check my answer to Silver (111) surface structure, and is bulk structure body-center or face-center cubic? Basically the "centered" lattices (fcc, bcc in 3D, centered rectangular in 2D) are contrived to be human friendly; the actual primitive unit cells are much smaller and oblique, and the 3D ones result in horizontal hexagonal planes when the "cubes" are stood up on their corners. | |
| Dec 29, 2022 at 22:25 | answer | added | Karsten♦ | timeline score: 4 | |
| Dec 29, 2022 at 15:14 | comment | added | Jon Custer | Fcc and hcp structures are similar stacking (fcc you need to look along the 111 body diagonal - a classic issue with the cubic conventional cell). | |
| Dec 29, 2022 at 15:01 | comment | added | Andi Iacob | Sorry I dont quite grasp what you mean. Do you have a visual representation? | |
| Dec 29, 2022 at 14:54 | comment | added | Ivan Neretin | But they are hexagonal, if you look at them sideways. | |
| S Dec 29, 2022 at 14:41 | review | First questions | |||
| Dec 29, 2022 at 16:09 | |||||
| S Dec 29, 2022 at 14:41 | history | asked | Andi Iacob | CC BY-SA 4.0 |