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Lawrence Livermore National Laboratory researchers have developed a new, more efficient permanent magnet that removes the deficiencies of conventional samarium and neodymium magnets.


The proposed magnet stems from the well-known samarium and cobalt (SmCo5, CaCu5-type structure) magnet, but goes a step further and substitutes most of the cobalt with iron and nickel.


More modern neodymium magnets have an advantage over SmCo5 because of their greater maximum energy. But the new magnet removes most of the disadvantages of SmCo5 while preserving its superior high-temperature efficiency over the neodymium magnets. Read the full story.