New class of swelling magnets to boost energy efficiency

May 20, 2015 6:30 PM

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New class of swelling magnets to boost energy efficiency

The new magnets are likely to find a range of applications in the fields of aerospace, automobile, biomedical, space and robotics.

Until now, it was assumed iron-based magnets could only change shape, not volume. It's a principle -- first described in the 1840s by physicist James Prescott Joule -- called "Joule Magnetostriction." The principle describes all magnetic materials used today. These limitations make magnets one-direc...

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