Interesting. Possibly related to the large magnetic fields reported in the Defkalion demo - the Magnetic Seebeck effect:
"Scientist use heat to make magnets" http://www.rdmag.com/news/2013/10/scientist-use-heat-make-magnets In their preprint - "Evidence for a Magnetic Seebeck effect" http://arxiv.org/pdf/1306.1001v2.pdf - the authors create a magnetic field in a small YIG crystal insulator (dimensions = 1cm X 2mm X 25um) only about 1.5 order of magnitude smaller than reported by Defkalion, without electrical current flow.
