Sagawa began working on permanent magnets when his employer Fujitsu tasked him with enhancing the mechanical strength of the samarium–cobalt magnet. At the same time, he believed there was a ...

which are considered one of the most advanced magnetic materials currently available due to their high temperature tolerance ...

This combination, known as the Samarium-Cobalt (SmCo) Magnet, significantly outperformed earlier versions of permanent magnets in terms of strength ... are magnets with high coercivity, resistance ...