Sustainable spintronics using iron oxide compound hematite: earth-abundant/ environmentally friendly (unlike yttrium iron garnet)

https://bioengineer.org/unlocking-sustainable-spintronics-with-an-abundant-earth-mineral/

"high-frequency signal processing: (1) overcomes spin wave signals not effectively resetting magnetic bits to allow for overwriting, (2) mitigates Joule heating energy loss... interference patterns between two separate excitation modes of spin waves, or magnon modes... importance of having two magnon modes cannot be overstated; it enables spin currents to be manipulated more flexibly... switching back/ forth between these two polarizations enables scalable/ efficient advanced data encoding/ storage"