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Technology update

Aug 29, 2007

Magnets warm up to get stronger

Physicists in the US have developed a warm compaction technique to make small, powerful bulk permanent magnets out of iron-platinum nanoparticles . The "exchange-spring" magnets consist of two magnetic phases – both "soft" and "hard" – and have exchange coupling between them, which makes the magnets stronger than ordinary magnets containing just a single phase. If perfected, the magnets could find use in a wide range of applications, from cell phones and data storage devices to hybrid cars, and could "revolutionize" our daily lives, say the researchers.

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