electret = brown's gas + rock dusts + high voltage during cooling?
Using rock and silicate dusts, is it plausible/possible/simple enough to melt the rock/silicates in a crucible furnace, pour the mix into a mould ... which is polarised by a high tension DC voltage field:
Upon cooling, the material is said to become a high voltage electric parallel of a magnet.
The concept is simple enough, right? I think Hutchinson adds barium titanate to his crystal cells, which I believe her charges straight off the 90 degree spike from a HV coil.
so ... polarisation ... like a magnet. possible? plausible? doable? instructable!! :D