: a magnet that retains its magnetism after removal of the magnetizing force
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For example, the United States is largely dependent on China for rare earths used in fiber optics, lasers, batteries, nuclear control rods, medical imaging, metallurgy, permanent magnets, catalysts, electronics, aerospace alloys, solid state devices, and data storage devices.—Deborah Wince-Smith, Forbes, 21 Feb. 2025 The country has some 300 manufacturers of rare-earth permanent magnets, according to Constantinides.—IEEE Spectrum, 8 Feb. 2025 The rare earth elements used in permanent magnets in wind turbine generators are difficult to retrieve for reuse.—Ariel Cohen, Forbes, 23 Dec. 2024 The Hightail runs on a permanent magnet synchronous motor (PMSM) motor that generates 42 horsepower and 485 lb ft (660 Nm) of torque.—New Atlas, 16 Dec. 2024 See All Example Sentences for permanent magnet
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