Making ferromagnets ready for ultra-fast communication and computation technology

https://phys.org/news/2024-06-ferromagnets-ready-ultra-fast-communication.html

"ferromagnets' ultra-fast spin waves, terahertz frequencies... communication/ computation 1,000X faster... 

spins acquire inertia, leading to nutation, an additional type of spin oscillation... injecting spin current with the "wrong" sign excites nutational auto-oscillations... spin inertia introduces 2nd time-derivative in motion equation... harmonize spin-current-driven dynamics and spin inertia... isomorphism, a parallel, between spin dynamics in ferromagnets and ferrimagnets"