: a magnet that retains its magnetism after removal of the magnetizing force
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In the early 1980s, a breakthrough occurred when General Motors and the Japanese company Sumitomo developed a rare earth permanent magnet.—Mark Dent, HubSpot, 9 May 2025 These two metals, however, are by far the most common rare-earth elements because of their important roles in making permanent magnet motors.—Bloomberg, Mercury News, 17 Apr. 2025 There is also yet to be a significant reaction in the market for rare earths, a 17-member family of metals with unique properties needed in technologies such as permanent magnets, night vision goggles and rocket guidance systems.—Tim Treadgold, Forbes.com, 15 Apr. 2025 But even those numbers do not fully convey China’s dominance of permanent magnet manufacturing.—IEEE Spectrum, 8 Feb. 2025 See All Example Sentences for permanent magnet
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