Rare earth magnets are strong permanent magnets created from metals of rare earth elements. The rare earth alloys, which include copper, iron, cobalt, nickel, selenium and strontium, are used in many different technologies such as electrical car engines and solar power generators. Using rare earths is on the rise due to the rising concerns over depletion of non-renewable resources. Although rare earths are quite rare, their manufacturing remains able to create high quality magnetic components for a vast array of uses. Developed in the late 1970s and early 1980s, rare earth magnets have been the most powerful kind of permanent magnetic motor created, generating much stronger magnetic fields than the common types like iron or ferrite magnets.
One of the main attractions of rare earths magnetic motors is they create an unending magnetic field with no beginning and no end. This makes them perfect for use in developing high-tech machines and other modern technologies with delicate electrical parts. The strength of a magnetic force can be increased by adding additional rare earth magnets to a circuit, leading to a greater ability to induce motion in a material. For example, adding three rare earth magnets to an aluminum circuit may increase the strength of the magnetic field enough to cause the aluminum to become magnetized.
Due to the extreme strength and durability of rare earth magnets, they compose a significant part of the core of modern battery technology. Due to this large field strength, these kinds of batteries can store sufficient electricity to power all of a person’s electric appliances for a full day. These types of batteries are typically used in applications requiring high field strength and compactness together with short life. Due to the high cost of different types of batteries like those made with graphite, researchers are continually looking for more efficient options to assist in fulfilling applications requiring large field strength and compactness together with lifetime.