In terms of present minimal "learning curve" freely available
GUI Rietvelds (at least with the interface - though you still have
to understand what you are doing) for Quant Analysis:
Rietquan (or the developing Sequel - Maud for Java) would have to
be on top of the list as it is optimised for quant analysis
and has a full GUI for browsing through the options.
http://www.ing.unitn.it/~luttero/
http://www.ccp14.ac.uk/ccp/web-mirrors/lutterotti/~luttero/
ftp://ftp.minerals.csiro.au/pub/xtallography/ccp14/ccp/web-mirrors/lutterotti/~luttero/index.html
Rietica would have to be up there - you just have to browse the
output file for the quant results. (don't forget to put the correct
Z value in for each structure to get the correct ZMV for quant analysis)
ftp://ftp.ansto.gov.au/pub/physics/neutron/rietveld/Rietica_LHPM95/
http://www.ccp14.ac.uk/ccp/ccp14/ftp-mirror/ansto/pub/physics/neutron/rietveld/Rietica_LHPM95/
Though it also looks like GUIs are possibly being developed by
third parties for GSAS and Fullprof.
For GUI GSAS interface refer Brian Toby's site:
http://rrdjazz.nist.gov/~toby/
http://www.ccp14.ac.uk/ccp/web-mirrors/briantoby/~toby/index.html
ftp://ftp.minerals.csiro.au/pub/xtallography/ccp14/ccp/web-mirrors/briantoby/~toby/index.html
Corrections or any extra information on any missing "minimal
learning curve" GUI Rietvelds appreciated.
----
One thing people may forget though is that to get a Rietveld
you are working with in a happy state for your project, you
may have to collaborate with the author(s). While this
can be time consuming for both sides (providing the author
thinks the changes worth while) it can be well worth the
extra work.
----
Also, there are various commercial Quant Rietvelds with GUIs
that could be worth evaluating and one of two of them may already
be optimised for the system you are dealing with:
BGMN(Siefert), Quasar(Philips), Siroquant(Sietronics), etc.
Lachlan.
> Dear Dr. Le Bail -
>
> Thank you for pointing the site for the Rietveld freewares. However, I
> am a novice at the concept of crystallography.
>
> 1- I am interested to do `quantitative analysis' of the phases (or
> components) present in my sample. I presently use a Rigaku Portable XRD
>
> with a Jade Ver3.1 software for data optimization. Jade is manufactured
> by MDI (Materials Data Inc). Their advise is to use a freeware(see
> correspondence with them below). Would you know of anyone who has
> something similar to Rietquan (Dr. Lutteroti's Rietveld software;
> http://www.ing.unitn.it/~luttero/) ? FulProf appears to be very
> invovled. My time is rather limited - and a freeware with the shortest
> learning curve is more than adequate.
>
> 2- Would you be able to point me to reference or book that discusses the
>
> concept of FOM (Figure of Merit) that is used by Search/Match softwares
>
> within a powder diffraction analysis?
>
> Could you please post this query in the Bulletin Board? (I could not
> seem to locate that site from this computer).
>
> Thank you for your attention.
> Louisa Lao
> http://www.hfmi.stevens-tech.edu
>
>
> ++++++++ (correspondence with MDI)
>
> I'm on travel and don't have access to earlier email. Quant analysis via
>
> Jade
> requires 1) Jade 2) Plug-in Quant module 3) Sept. '98 ICDD database.
> Prices
> for 1) and 2) have no discount available. ICDD discounts their database
> for
> academic use, contact ICDD directly. If all you wish to do is quant, the
>
> above
> is quite expensive. It provides far more than just quant, however. My
> choice
> for quant only would be Riqas if the user is comfortable with
> structures,
> space groups, etc. but may need occasional technical support. If you
> have
> local resources for tech support or someone you can turn to for
> assistance,
> one of the codes avaliable via the web may be the answer. As we don't
> use
> these codes, you will get better information from someone who does and
> who has
> the same sort of problems to solve.
> Regards,
> Q. Johnson
> [EMAIL PROTECTED]
>
>
>
>
>
--
Lachlan M. D. Cranswick
Collaborative Computational Project No 14 (CCP14)
for Single Crystal and Powder Diffraction
Daresbury Laboratory, Warrington, WA4 4AD U.K
Tel: +44-1925-603703 Fax: +44-1925-603124
E-mail: [EMAIL PROTECTED] Ext: 3703 Room C14
NEW CCP14 Web Domain (Under heavy construction):
http://www.ccp14.ac.uk
