<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div dir="ltr" id="yui_3_16_0_1_1418403341181_5480"><span>Dear QE Users,</span></div><div id="yui_3_16_0_1_1418403341181_5988" dir="ltr"><br><span></span></div><div id="yui_3_16_0_1_1418403341181_5990" dir="ltr"><span id="yui_3_16_0_1_1418403341181_5989">I am running calculations using LaFeO3 which contains 20 atoms (4 La, 4 Fe and 12 O atoms respectively) in the unit cell.</span></div><div id="yui_3_16_0_1_1418403341181_5991" dir="ltr"><br><span></span></div><div id="yui_3_16_0_1_1418403341181_5995" dir="ltr"><span id="yui_3_16_0_1_1418403341181_5994">I, however see from published works like that from Chemistry of Materials, 2013 by Ritzmann et al. having started with 5 atoms in the unit cell though they used the VASP code for their computations.</span></div><div id="yui_3_16_0_1_1418403341181_6771" dir="ltr"><br><span id="yui_3_16_0_1_1418403341181_5994"></span></div><div id="yui_3_16_0_1_1418403341181_6772" dir="ltr"><span id="yui_3_16_0_1_1418403341181_5994">I would like to know if it is okay to continue using the 20 atom unit cell which is computationally expensive or I should resort to the 5 atom unit cell. If the 5 atom unit cell, can anyone please direct me to where I can get this CIF file?</span></div><div dir="ltr"><br><span id="yui_3_16_0_1_1418403341181_5994"></span></div><div id="yui_3_16_0_1_1418403341181_7290" dir="ltr">Thanks</div><div dir="ltr"><br></div><div dir="ltr"><br><span id="yui_3_16_0_1_1418403341181_5994"></span></div><div dir="ltr"><span id="yui_3_16_0_1_1418403341181_5994">Regards</span></div><div id="yui_3_16_0_1_1418403341181_7291" dir="ltr"><span id="yui_3_16_0_1_1418403341181_5994"><u>Isaac</u></span></div><div id="yui_3_16_0_1_1418403341181_5484"><div><br></div><div id="yui_3_16_0_1_1418403341181_7292"> </div></div><div id="yui_3_16_0_1_1418403341181_5996" class="signature"><font id="yui_3_16_0_1_1418403341181_5998" size="2"><font id="yui_3_16_0_1_1418403341181_5997" face="times new roman, new york, times, serif">..<br>Isaac Wiafe Boateng |Graduate Student <br>Department of Chemistry, Theoretical and Computational Chem. Lab<br>KNUST, Kumasi - Ghana<br>+233 (0) 275 632712<br>Alt. e-mail: boatengisaacwiafe@gmail.com<br></font></font></div></div></body></html>