There is no category of the magnet stronger than a rare earth magnet, including AlNiCo and ferrite is more common variety. Both have different uses and strengths different from each other.
Samarium-cobalt magnets are stronger than any other type of magnets, except the equivalent rare earth neodymium. Samarium-cobalt magnets are not as frequent because of its more brittle nature of neodymium, the magnetic field used the lower price and more expensive. When it comes to the magnetic force in higher operating temperatures, however, is the Samarium Cobalt is the perfect answer for neodymium.
Neodymium magnets are the strongest available and are cheaper than samarium-cobalt magnets. Composed of neodymium, boron and iron, the magnets have the highest magnetic attraction, but can not resist oxidation and temperature, and the other type of rare earth magnet, samarium-cobalt. For this corrosion, neodymium rare earth magnets for the protection of zinc, nickel or gold-coated.
Rare earth magnets from a few centimeters in length can cause significant damage to the body. For this reason, they must be treated with care and safety precautions. Because of the power exerted by these types of magnets, injuries can occur when a body part is caught between two or more magnets. Even if the handler works only with a rare earth magnet, we must take care they are not between the magnet and metal surface step. If it can, in too close, separate magnets can attract each other and respond with such speed that can break the magnets and sending projectiles into the air, further threatening anyone nearby. These magnets will also remove many types of media, magnetic fields employed, including the hard drives of personal computers and credit cards and debit cards.
In the real world of rare earth magnets have many applications that are used in many different devices. The most common use is in computer hard drives and speakers. They are also found in the brakes of fishing reels, motors and cordless power tools, and Dynamos. Maglev accepts rare earth magnets to lift and move onto the tracks. Rare earth magnets are used in the stop-motion animation, using anchor models on a roller coaster, water power to speed in MRI scanners for medical imaging, and vans, designed to electric guitars, violins and are installed to capture and convert the vibrations of bass.
Rare earth magnets have become an integral part of modern technology. Their power is unprecedented and may be made applicable to a range of commercial and scientific approaches. Like most great resources, some risks that are excluded to avoid injury to be considered, but must when treated with the utmost attention, they are one of the best inventions of science past 40 years.