the subject on anisotropic broadening,
but found it very illuminating.
regards,
Jens
> -Original Message-
> From: Nicolae Popa [mailto:[EMAIL PROTECTED]
> Sent: 24. august 2004 11:06
> To: [EMAIL PROTECTED]
> Subject: Re: Anisotropic line broadening in cubic material
&g
Dear Jens,
Peter Sthephens is right, try first to see if you have an anisotropic strain
effect. But if not, it doesn't mean that you have not a simple size effect,
not necessarily staking faults. The size anisotropy model in GSAS is in fact
the rod (or plate) model (I wonder why the needles model
Jens,
Your effect might be more related to strain than size broadening. You
would have to check widths at various diffraction orders in a given
direction (i.e., 111, 222, 333, etc., vs 200, 400, 600, etc. for an fcc
material). If the widths increase roughly in proportion to diffraction
orde
I suspect that the broadening may be caused by stacking
faults or twinning, but how do I determine whether this is the case?
There is no software in which you enter the powder data and from which
the case of faulting is suggested...
Many cases of faulting in simple metals or mixed-metallic compoun
Another, related question.
If I do a Rietveld refinement of this material, it IS possible to get a
good fit by refining an anisotropic size broadening component in GSAS.
If I refine Xe (ptec) in profile function 2 I get a negative value. When
I look in the manual, it states that I can get the anis
