Dear experts and users, I am going to study a system of AB0.5C0.5X3. At first, the optimized struct file of orthorhombic ABX3 (space group =Pnma, inequivalent atom=5, total atoms=20) has been considered to make a 2*2*2 supercell using "supercell" (in single program). I have taken that super.struct file to a new folder and edited the struct file by replacing two inequivalent B atoms with two C atoms, then started the initialization-calculation after saving the struct file. During the initilization process, nn program gives an warning "mult not equal" and suggest a new struct file. I have chosen that and observed a warning "unit cell has been reduced" after the sgroup run and it suggests a new struct file with space group 11-P21/m (inequivalent atms=40, total atom=80). I couldn't find any error after accepting this struct file. I am new to supercell calculation and want to confirm whether the structure is okay or not before proceeding further. Kindly suggest me if I miss something!!
Thank you!! -- With regards Anupriya Nyayban Ph.D. Scholar Department of Physics NIT Silchar
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