Rare earth ndfeb permanent magnet materials, with high remanence, high coercive force and high magnetic energy product features, are widely used in electronics, aerospace industry and drive wind turbines (farms) is especially suitable for sea; The single crystal and polycrystal of garnet ferrite, which is composed of pure rare earth oxides and trioxide, can be used in microwave and electronic industry. Yttrium aluminium garnet and neodymium glass, made of high purity neodymium oxide, can be used as solid laser materials. It can be used to make cathode materials for electron emission. Lanthanum nickel is a newly developed hydrogen storage material in the 1970s. Lanthanum chromate is a high temperature thermoelectric material; At present, the superconducting materials made of barium - based oxide modified by barium yttrium oxide in the world can obtain superconductors in the liquid nitrogen temperature region, making breakthrough in the development of superconducting materials. In addition, rare earth phosphor, intensifying screen phosphor powder, tricolor phosphors, copy lamp, widely used in lighting light source, but due to higher prices lead to high cost, so the application in lighting gradually reduce), projection TV tablet computers and other electronic products; In agriculture, the application of trace amounts of rare earth nitrate to field crops can increase its yield by 5~10%. In the textile industry, rare earth chloride is also widely used in tanning, fur dyeing, wool dyeing and carpet dyeing. Rare earths are used in automotive catalytic converters to turn the main pollutants into non-toxic compounds in the engine exhaust.
Rare earth elements have also been applied to a variety of digital products including audio and video, photography, a variety of digital communication equipment, can meet the product smaller, faster and more portable, use longer and energy saving requirements. At the same time, it has been applied to green energy, medical treatment, water purification, transportation and other fields.
