<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Dear users</DIV>
<DIV>In simulation of charged defect in bulk ,makov-payne correction are used. But the terms that add to correct the total energy need to count madeulun constant. I study TiO2 in tetragonal cell( the size of cell is 2*2*3). How can I obtain madeulung constant?</DIV>
<DIV>thanks a lot<BR><BR>Ali Kazempour<BR>Physics department, Isfahan University of Technology<BR>84156 Isfahan, Iran. Tel-1: +98 311 391 3733<BR>Fax: +98 311 391 2376 Tel-2: +98 311 391 2375</DIV></td></tr></table><br>