It is my understanding that the north pole runs counter clockwise and the south clockwise. When the pickup coil is wound the same way as the pole you'reusing runs, there is symbiosis. Bloch wall displacement generates electricity. Take a look at this video which proves everything I've stated:

https://www.youtube.com/watch?v=etaYzqtEnDw

I agree zaknick,
thanks for sharing.
I know that video. its a good one indeed.
the bloch wall represents the dielectric field. so it seems its about displacement of the dielectric field