Talk:Lattice constant

A question: is the article not self-contradictory in first stating, "However, in the special case of cubic crystal structures, all of the constants are equal and we only refer to a." and then stating, "Lattice constants differ for different axes in the crystal structure, except in the case of non-cubic crystals."

Is there something I'm missing? —Preceding unsigned comment added by 64.252.204.4 (talk) 07:51, August 24, 2007 (UTC)

No, everything in that sentence is either redundant or wrong. Or rather, was, sine I just axed it. --DrTorstenHenning 12:49, 24 August 2007 (UTC)

No, the statement was simply redundant. In the case of cubic structures, the constants are all equal and thus the lattice constants show no variations depending on the axis of preference. --Jbstiller13 (talk) 22:13, 19 February 2012 (UTC)

Could somebody consider adding a table of Lattice Structures? --Frozenport (talk) 15:25, 27 June 2008 (UTC)

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Lattice parameter!

This article should be moved to lattice parameter, and changed accordingly. They change with temperature and pressure, thus they are parameters, not constants. Probably, a short section should also describe the difference, and that lattice constant is also used often. I can do this in the future, but I wanted to make sure this is not too controversial. --!nnovativ (talk) 15:11, 21 May 2019 (UTC)

It seems that this has been a redirect from lattice parameter since 2012. While they do change with temperature and pressure, the change is small enough that they are normally given as linear corrections, assuming that they are measured accurately enough. In the case of the silicon sphere, it is even isotope selected as Si-28 to get even that factored out. Most are only specified to four digits, which might not be enough to notice such differences. Right or not, as well as I know lattice constant is the WP:COMMONNAME Gah4 (talk) 02:42, 30 January 2020 (UTC)

Basis

The article should mention early that often the lattice constant is often of a multi-atom basis. For diamond, it is the side of a cube. The result is that diamond electrically has cubic symmetry, even though it doesn't have a cubic lattice. (The index of refraction is independent of the direction.) Simple cubic (one atom cubic cell) is very rare. FCC and BCC are fairly common. Gah4 (talk) 17:15, 23 March 2023 (UTC)