Terbium with the symbol Tb is an f-block element and belongs to the lanthanide group. Its atomic number is 65, and atomic weight is 158.9u. This article illustrates facts and uses of terbium.
- Terbium is stable when exposed to air and oxidizes very slowly.
- Tb is electropositive in nature and so is used commercially in semiconductor industries.
- Terbium is also used in high-temperature fuel cells as a crystal stabilizer.
- In solid-state electronic devices, terbium is used as a doping agent in calcium fluoride, strontium molybdate and calcium tungstate.
- Terbium is chiefly used in phosphorous projection color television tubes and fluorescent lights as a high-intensity emitter of green light.
- To enhance the safety of medical X-rays, Tb is used as it produces a perfect quality image in a significantly short exposure time.
- Terbium oxide pellets are used in thin-film applications.
- Terbium salts are used in mercury lamps, optical coatings, and laser equipments.
- Terbium alloys (such as Tb-Fe-Co) are used widely in magneto-optic recording films.
- Electronic devices like actuators, sensors, and sound bug devices employ the use of terbium alloys.
- An alloy of terbium, dysprosium, and iron is utilized to expand and contract the magnetic field. This effect is the foundation for loudspeakers that are mounted on flat surfaces, such as window panes, and function as a speaker.
Conclusion
Terbium is a soft, malleable, silvery metal and is a solid at room temperature. Tb is contained in the minerals like cerite, monazite, and gadolinite. It is a rare and valuable metal. It is stable in air even at high temperatures and shows magnetic properties, thus associated with magnetic controlled devices.
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