Dear Angel,
The broadening due to stacking faults is structure-dependent, so the
expressions derived for HCP structures are applicable only to the specific
faults in close-packed atomic arrays.A general model applicable to any
structure is described in J Appl Cryst (2000) 338 and implemented in
Dear colleages,
I would like to calculate the stacking fault probability in an O3 structure (a
layered compound of the type ABO2 (A=alkali element, B=transition metal
element, O=oxygen) crystallizing in the trigonal R-3m space group (hexagonal
axes)) from the broadening of the XRD peaks. I have
Dear Luca,
I think ice is not claimed to be turbostratic (see PNAS paper). I think
the disorder in cubic ice case is much closer to the the planar disorder
you can experience in close-packed metals (or in SiC, Laves phases, etc)
than to clays.
Best regards
Andreas
On 07.04.2014 10:18, Luca
: Stacking faults and antiphase boundary
Dear all,
I think Jon is right. In the case of Cu this is the position of a (100)
reflection of a hcp polytype. I have seen this feature in a couple of
cases, and presence of this feature is sometimes taken as a sign for a
two-phase character of the specimen
Glad the discussion is opening a bit.
Actually the Ice case is a bit different from the point of view of the
defects. These are turbostratic planar defects (in the case of close
packed alloys you have twins and intrinsic and extrinsic deformation
faults). Now it is true that there is not a big dif
Dear all,
I think Jon is right. In the case of Cu this is the position of a (100)
reflection of a hcp polytype. I have seen this feature in a couple of
cases, and presence of this feature is sometimes taken as a sign for a
two-phase character of the specimen, which need not be the case (other
On 06/04/2014 08:06, Leonid Solovyov wrote:
The faulting model in DDM gives nearly perfect agreement with the experiment:
http://sites.google.com/site/ddmsuite/home/Copper-DDM.png
It looks a little bit reminiscent of this pattern for ice:
http://www.science24.com/paper/15441
...but the litt
, Russia
http://sites.google.com/site/solovyovleonid
***
- Original Message -
From: Luca Lutterotti
To: rietveld_l@ill.fr
Cc:
Sent: Friday, April 4, 2014 5:29 PM
Subject: Re: Stacking faults and antiphase boundary
>>but here
>>but here we are talking about densities of stacking faults around 1%
(thatis anyway quite a high value for these alloys).
>>Your quantification was less than that. Now it means you have one cell
every 100 affected for the intensities. How much change do you expect to
have? Your occu
>but here we are talking about densities of stacking faults around 1%
>(thatis anyway quite a high value for these alloys).
>Your quantification was less than that. Now it means you have one
>cell every 100 affected for the intensities. How much change do you
>expect to have? Your o
Sorry Leonid,
but here we are talking about densities of stacking faults around 1% (that
is anyway quite a high value for these alloys). Your quantification was
less than that. Now it means you have one cell every 100 affected for the
intensities. How much change do you expect to have?
Your
, Akademgorodok 50/24, Krasnoyarsk, Russia
http://sites.google.com/site/solovyovleonid
***
- Original Message -
From: Luca Lutterotti
To: Leonid Solovyov
Cc:
Sent: Thursday, April 3, 2014 6:33 PM
Subject: Re: Stacking faults and antiphase
Werckmann, P. Schultz, Direct Observation of Stacking Faults
and Pore
Connections in Ordered Cage-Type Mesoporous Silica FDU-12 by Electron
Tomography.
J. Am. Chem. Soc. (2008) 16800]
>To make the audience aware, just changing the cell was not sufficient, you
>have to reproduce the intens
titute of Chemistry and Chemical Technology
660049, K. Marx 42, Krasnoyarsk, Russia
http://sites.google.com/site/solovyovleonid
***
From: Luca Lutterotti
To: "rietveld_l@ill.fr"
Sent: Wednesday, June 26, 2013 5:19 PM
Subject: Re: Stacki
I would like to use stacking faults model in GSAS profile shape function 3
(according to GSAS manual page 147-148) with expgui.
I would appreciate if anybody had used it and can help me.
Tasos Gantis
Athens University
The theory of line broadening due to stacking faults as presented in
Warren's book has been improved recently further:
X-ray
diffraction analysis of stacking and twin faults in f.c.c. metals: a
revision and allowance for texture and non-uniform fault probabilities
VELTEROP L, DELHEZ
I would suggest you look into the work of Mike Treacy et al. and in
particular his DIFFaX program (check ccp14 for links.) The effects of
stacking faults on diffraction patterns can be quite complex and are
not simulated through use of models that contain long range symmetry.
Brian
ling yang
Dear all,
Are there anybody experienced in stacking faults? Please help me!
Basically I'm following Warren's book and R. Berliner's paper to simulate
the possible effects of stacking faults on diffraction patterns. I did generate
a set of patterns for fcc, but there are som
>I have a problem refining neutron data on MnSe due to stacking faults. Can
>any one tell me how to account for stacking faults and which refinement
>program to use. I have refine the chemical as well as magnetic cell.
To my knowledge, there is no Rietveld software able to face
auto
I have a problem refining neutron data on MnSe due to stacking faults. Can
any one tell me how to account for stacking faults and which refinement
program to use. I have refine the chemical as well as magnetic cell.
Thanks in advance
regards,
Kaustubh
Hi all,
I would want to know how simulate stacking faults in Rietveld refinements.
I need to know if exist any reference in this respect in hard magnetic
materials. Any help will be apreciate.
Thanks in advances, Raimundo
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