Recently I am using Q3D to simulate planar transformer. I have an EE core made of ferrite. Since I only want to simulate the winding loss, I set the bulk conductivity of ferrite material to be 0 Siemens/m.
However, when I use AC R/L Fields/Mag_SurfaceJac to check the current distribution, I can still observe considerable amount of current in the ferrite core. This is strange because its conductivity is 0. Can anyone explain this phenomenon?