The new alloy composed of neodymium, boron and iron co-doped with cobalt and cerium, that is abundantly available, will replace the dysprosium, making these engines less expensive by 20 to 40%.
Currently, sintered magents being used for many years, will face tough competition from the new alloy which has the potential to demagnetise at high temperatures of even 150 degree celsius.
That means the new alloy has potential to become a permanent magnet in applications involving high-temperature, replacing the costly dysprosium.
“Replacement of Dy and substitution of Nd in NdFeB-based permanent magnets by Ce, the most abundant and lowest cost rare earth element, is important because Dy and Nd are costly and critical rare earth elements,” said researchers in their paper.
“The Ce, Co co-doped alloys have excellent high-temperature magnetic properties with an intrinsic coercivity being the highest known for T ≥ 453 K.,” said the publication at a glance about the research outcome.