Hi @nchode I'm so grateful for your answer.
I'm trying to change the direction of Alnico magnet by applying a pulse of enough mmf to the coil but when the current decreases to zero, the direction of magnetic flux changes to the initial position (I saw the magnetic flux).
I think it's because of the BH curve that is defined in the second quadrant and I have to import the whole information of BH curve. I also attached the current.
Do you agree with me?
Best Regards