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How to Create a Powerful Magnetic Field | Sciencing- magnetic field superstrong ,The easiest way to create a powerful magnetic field is by creating a powerful electromagnet. Electromagnets are used for everything from powering tiny electronic switches (called relays) to lifting huge pieces of scrap metal.Neodymium magnet - WikipediaLike other magnets, the neodymium magnet alloy is composed of microcrystalline grains which are aligned in a powerful magnetic field during manufacture so their magnetic …