The magnetic field of magnet is measured in the SI unit of Tesla. A higher value indicates a stronger magnet. According to the Magnetic Materials Producers Association (MMPA), a neo magnet exhibits magnetic field strengths of 1.0-1.4 Teslas. The Samarium Cobalt only displays 0.8 to 1.1 Teslas. A common ceramic magnet only exhibits field of 0.5 to 1.0 Teslas. Also unlike its predecessors, neo magnets have less density: 7.3 g/cm3 compared to 8.3 g/cm3 for Samarium Cobalt magnets .
The strength and relatively light density of the neo magnets allow for electric motors to be lighter, thus reducing the weight of electric vehicles. Fore example, a hybrid vehicle’s motor, like the Toyota Prius (Fig. 3), houses about 2.2 pounds of neo .
Besides being used in electronic devices, neo magnets have many other uses. They can be used as tools around the house, for medicinal or health purposes, in educational applications, or even just for fun. As tools, neo magnets can also be used to find nails in walls, remove metal impurities from car oil, form a magnetic storage rack for various metal items, such as knives or tools , or even form the common refrigerator magnet. One example of a medicinal device that utilizes neo magnets is the Magnetic Resonance Imaging (MRI) machine. The magnetic properties of the magnets can also be used for therapy purposes, creating a magnetic flow over the body that can help relieve pain from arthritis . The magnets are also currently marketed as toys, intended to be used in magnetic construction sets, for desktop novelty purposes, or to create sculptures for aesthetic pleasure (Fig. 4).
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