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 ...

These elements tend to come from two specific areas of the periodic table: the d-block metals like cobalt ... have very high magnetic anisotropy, which contributes to the strength of rare-earth ...

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 ...