Bulk composite containing 3D networked nano-interfaces extends spin Seebeck effect from thin-film interfaces to macroscopic scale

https://www.eurekalert.org/news-releases/1142557

"coat yttrium iron garnet magnetic insulator powders with platinum, sinter under high pressure, creating 3D network of nanoscale interfaces... allows spin-current-driven thermoelectric conversion to occur across the bulk rather than being confined to 2D surface... resulting trans-scale spin Seebeck effect enables energy harvest scaling in thickness, overcoming power output limitations... converting industrial waste heat into electricity using magnetic insulator materials"