All magnets have points, or poles, where their magnetic strength is concentrated.Those points are called poles. We label them north and south because suspended magnets orient along north-south planes. On different magnets, like poles repel each other, opposite poles attract.
Modern permanent magnets are made of special alloys that have been found through research to create increasingly better magnets. The most common families of magnet materials today are ones made out of Aluminum-Nickel-Cobalt (Alnicos),Strontium-Iron (Ferrites, also known as Ceramics), Neodymium-Iron-Boron (Neo magnets, sometimes referred to as “super magnets”), and Samarium-Cobalt. (The Samarium-Cobalt and Neodymium-Iron-Boron families are collectively known as the Rare Earths.)
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Neodymium Magnet (NdFeB magnet), referred to as the “King of Magnets”, has so far the highest commercialized performance. It has quite high magnetic properties, whose BHmax is 10 times higher than Ferrite. It is excellent in mechanical performance, and its operating temperature can reach up to 200 degrees Celsius. With its hard texture, stable performance and […]