a lokal distortion in the structure produces strain, which gives delta d /
d and is fitted with Y and Ye in the Thompson-Cox-Hastings.
My question: What produces a symmetric distribution of unit cell edge
lenghts? Will I get a broadening, which follows tan(theta) as above, or
something different?
This problem is of interest for us, because we deal with substituted iron
oxides, where individual crystals may have a slightly different chemistry
and, hence, different unit cell edge lengths.
Thanks in advance,
Helge Stanjek