HI Comsol Users
I am trying to model the e-filed lines expected for a PbTiO3 crystal with electrodes on top and bottom to which I apply a voltage to the top one and leave the bottom one grounded.. I can easily get a surface plot of electric potential and from that show the e-field lines for what would effectively be a DC supply.
My problem arises when I then sweep it over frequency as nothing actually changes. I know it must have something to do with my PbTiO3 substrate having a frequency dependent permittivity however I am completely clueless as to how to programme this into COMSOL.
Also once I get this I was hoping I would also be able to model the leakage current across the crystal.
Any help would be appreciated.
I am trying to model the e-filed lines expected for a PbTiO3 crystal with electrodes on top and bottom to which I apply a voltage to the top one and leave the bottom one grounded.. I can easily get a surface plot of electric potential and from that show the e-field lines for what would effectively be a DC supply.
My problem arises when I then sweep it over frequency as nothing actually changes. I know it must have something to do with my PbTiO3 substrate having a frequency dependent permittivity however I am completely clueless as to how to programme this into COMSOL.
Also once I get this I was hoping I would also be able to model the leakage current across the crystal.
Any help would be appreciated.