demagnetised BrE
demagnetized AmE

Pulsed controllers arouse considerable controversy in specialised model-railway publications, with sad stories of smoking armatures and demagnetised magnets said to sometimes follow their use as well as complaints of excessive hum from some motors at the drive frequency.

Signing artists such as Woody McBride and Cristian Vogel alongside Dave Clarke, Magnetic North released 14 12" EPs and the 'Demagnetized' compilation album until Dave's other DJ and recording commitments meant the label was dissolved in 1994.