User talk:Double sharp/Crystallographic properties of the elements

Some shrinkage may occur

 * I appreciate that you dug out all these thermal expansions. That's remarkable how much Gd shrinks along the c axis when it's warmed through the Curie point near 20 °C. –MadeOfAtoms (talk) 11:21, 6 February 2024 (UTC)
 * Yeah, that temperature is maybe not too representative for this element.
 * A few notes:
 * There's no thermal expansion data for helium (the only element that refuses to solidify at ambient pressure).
 * The available experimental data for &alpha;-B thermal expansion is too poor to say anything other than that the expansion varies erratically, so Arblaster declined to give a value.
 * The lattice parameters and thermal expansion for &beta;-F2 are all estimated – and, in the case of thermal expansion, apparently based on noting that it ought to be similar to isostructural &gamma;-O2. Experimental data does exist for lattice parameters, but it is low in accuracy (can you really blame anyone for this, though?).
 * The lattice parameters and thermal expansion for Pm are estimated (though again low-accuracy data for lattice parameters exist), based on comparisons with isostructural Pr and Nd and the fact that Pm should behave quite like a 50-50 Nd-Sm alloy does. (Hurray for the similarity of the lanthanoids!)
 * There is no experimental data at all for At, Rn, Fr, Fm, Md, No, and Lr. The reasons are obvious. Everything there is an estimate.
 * Double sharp (talk) 12:07, 6 February 2024 (UTC)

I added some phase transitions and melting points. Double sharp (talk) 16:15, 6 February 2024 (UTC)

Tin lattice constants

 * There's a typo in the β-Sn lattice constant given by Arblaster (2018) in Appendix B (gives incorrect a = 0.58513 nm) where the book on pg 386 gives the correct value (a = 0.58313 nm). (I got my own copy of Arblaster now :-) ). Found this typo by checking consistency with density. Also the thermal expansion for β-Sn is anisotropic, but your table gives only αa at present. I'd be glad to update details like this as I find them, am but asking permission first before perturbing your sandbox. Thanks again for this mass of reference data! –MadeOfAtoms (talk) 23:44, 16 March 2024 (UTC)
 * Sure, go ahead and fix it! :D Double sharp (talk) 04:17, 17 March 2024 (UTC)