[Ifeffit] (no subject)

[Frenkel, Anatoly]

There was a paper by J. Penner-Hahn et al. studying ZnCl2 by EXAFS and using it to demonstrate the quadrupole (1s-3d) transition by analyzing angular dependence of pre-edge features of Zn K-edge. You may contact him directly for exact reference.
 
Anatoly
 
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From: ifeffit-bounces at millenia.cars.aps.anl.gov on behalf of JeongEunSuk
Sent: Tue 1/19/2010 8:01 PM
To: ifeffit at millenia.cars.aps.anl.gov
Subject: [Ifeffit] (no subject)


Hi all
I have a question for XANES of Zinc compounds.
It is known that the pre-edge for Zinc k-edge generally doesnt exist because 3d state of Zinc atom is occupied.
However, I got it from ZnMgO with wurtzite structure. 4 oxygen in first shell and 12 zinc in second shell are located around Absorbing atom, Zinc in wurtzite structure.
And then I know that some Mg atoms are replaced on zinc site from EXAFS.  
I wonder the reason for the appearence of pre-edge. Is it structural problem? or substituted Mg?
If anybody know reference papers for pre-edge of zinc K-edge, Please answer me.
 


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