Anatoly,<br>Here I attach some pictures.<br>I also have luminescence measurements an found a great disorder but I could not find changes in the cell parameters by XRD refinements. I perfored XANES simulations for ZnO sustituted by Er and the spectra is really different. I cannot believe that the Er is in Zn site, but maybe the structure changes and the simulation is not so &quot;real&quot;.<br>
<br>euG<br>&nbsp;<br><br>