[Wien] Convergence Problem

[ritabrata bhowmick]

Dear Wien users,
                             I am performing phonon calculations of B13C2  with 2x2x2 supercell. After init_phonon_lapw  with RMT 1.25 (maximum possible), RMTkmax 5.50 , k points 1 and mixing factor 0.05(BROYD scheme). It converged with -fc 1.0 but  I am facing convergence problem with -fc 0.1.  Default mixing factor is 0.4. I tested the same with mixing factor 0.1 with BROYD and PRATT scheme separately but the result was same. I am waiting for your suggestions.

                                                                                                  Ritabrata