Electron flow through cheap disordered iron- based composite works as well as using perfectly ordered, high-quality, expensive crystals

https://www.eurekalert.org/news-releases/1121279

"generates strong transverse signals defined as when voltage emerges perpendicular to applied current's direction, fundamental mechanism behind magnetic sensors/ thermoelectrics... combined 2 different magnetic materials creating amorphous (disordered)/ crystalline (ordered) composite, causing electron trajectories to repeatedly bend, significantly amplifying sideways (transverse) motion component... composite materials are not just average of their parts; how structurally integrated more important"