First-Ever Permanently Magnetic Liquid Created

“The team then placed the millimeter-size droplets near a magnetic coil to magnetize them. But when they took the magnetic coil away, the droplets demonstrated an unseen behavior in liquids — they remained magnetized. (Magnetic liquids called ferrofluids do exist, but these liquids are only magnetized when in the presence of a magnetic field.) (Link)

Image Credit: Xubo Liu et al./Berkeley Lab

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