Application
Terbium, available in the form of a silvery-white chip or ingot, or as a grey powder, serves multiple significant roles across various industries. Its primary application lies in the realm of phosphors, finding its essence in fluorescent lamps and as a high-intensity green emitter in projection televisions, notably in Yttrium-Aluminum-Garnet (Tb:YAG) technologies. The metal's efficiency in response to x-ray excitation also paves its way into use as an x-ray phosphor. In the world of electronics and magnetics, terbium is integral in the composition of magneto-optic recording films, such as TbFeCo, and is crucial in the production of devices like actuators, naval sonar systems, sensors, and others, credited to its role in Terfenol-D. Additionally, terbium is a vital additive in NdFeB permanent magnets to enhance the Curie temperature and improve temperature coefficients. In the form of its coded version, 6563D, it is pivotal in the magnetostrictive alloy TEFENOL-D. Moreover, its versatility extends to its utility as a dopant in calcium fluoride, calcium tungstate, and strontium molybdate within the semiconductor industry, stabilizing crystals in fuel cells at high temperatures. Terbium is also applied in the coating of solid-state devices, as well as in laser production, fuel cell stabilization, and as a metal component in nuclear reactor control rods. Despite its seemingly limited uses, terbium's unique attributes ensure its indispensable presence in modern technology and electronic advancements.
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