[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [sdpd] Seeking for a genius in phase transition/structure prediction

Armel, Here's an alternative to finding a genius who has nothing better to 
do.  I'm happy to collect a high resolution pattern for you at room 
temperature and low temperature.  Trying to solve the problem without an 
indexable pattern sounds about as interesting as trying to solve a 
crossword puzzle using only half of the clues.  And anyway, how would you 
know if the claimed solution is correct?

^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~
Peter W. Stephens
Professor, Department of Physics and Astronomy
Stony Brook University
Stony Brook, NY 11794-3800
fax 631-632-8176




From:
Armel Le Bail <armel.le_bail...@univ-lemans.fr>
To:
sdpd...@yahoogroups.com
Date:
01/05/2011 03:08 AM
Subject:
[sdpd] Seeking for a genius in phase transition/structure prediction
Sent by:
sdpd...@yahoogroups.com



 
Hi,

Here is the problem :

Inorganic phase containing K/P/O.

Crystal structure determined by SDPD at 300°C.

Phase transition at 270°C, powder diffraction diagrams available
from room temperatute to 700°C. But indexing at room temperature
failed (this is conventional X-ray, low resolution).

Then, there could be two possibilities, either recording a high
resolution powder pattern, or predicting the low temperature phase.

Any expert in phase transition wanting to attempt to solve that problem ?

Best regards,

Armel Le Bail

(happy New Year to the SDPD mailing list subscribers)






[Non-text portions of this message have been removed]



------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/sdpd/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/sdpd/join
    (Yahoo! ID required)

<*> To change settings via email:
    sdpd-digest...@yahoogroups.com 
    sdpd-fullfeatured...@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
    sdpd-unsubscribe...@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/