Re: Rietveld: U,V,W

2008-11-30 Thread Mingtao Li
Why my reply went to the author's personal mail box? I am very sorry for that.

Now I am hunting for a standard reference material to determine the
profile parameters of our instrument X'pert Pro.

-- 
Mingtao Li
State Key Laboratory of Multiphase Flow in Power Engineering
School of Energy and Power Engineering
Xi'an Jiaotong University
Xi'an, 710049
P.R.China
Tel: +86-29-8266 8296
Fax: +86-29-8266 9033
Email: [EMAIL PROTECTED]


I am a newcome, how can I begin my rietveld refinement analysis

2008-11-29 Thread Mingtao Li
Hi, everyone,
 I am a newcome to Rietveld refinement. Actually I am a student
majored in photocatalytic splitting water for hydrogen production. We
want to analysis the structures of our photocatalysts via rietveld
method. For that purpose we got a X'pert Pro diffractionmeter from
Panalytica about 3 years ago. But rietveld is too difficult to start.
Now I have read some books and downloaded some programs from ccp14
such as fullprof, checkcell and so on. Also I have tested some
examples. However I am still confused. How can I determine the initial
value of some parameters such as U, V and W. Maybe I need a
Instrumental Resolution Function file, but how can set that file?

Can anybody give me some advice about this?

thanks a million.

-- 
Mingtao Li
State Key Laboratory of Multiphase Flow in Power Engineering
School of Energy and Power Engineering
Xi'an Jiaotong University
Xi'an, 710049
P.R.China
Tel: +86-29-8266 8296
Fax: +86-29-8266 9033
Email: [EMAIL PROTECTED]