Gadolinium is a chemical element with the symbol Gd and atomic number 64. Gd is a silvery-white metal when oxidation is removed. It is only slightly malleable and is a ductile rare-earth element. Gadolinium reacts with atmospheric oxygen or moisture slowly to form a black coating.
It was discovered in 1880 by Jean Charles de Marignac, who detected its oxide by using spectroscopy. It is named after the mineral gadolinite, one of the minerals in which gadolinium is found, itself named for the chemist Johan Gadolin. Pure gadolinium was first isolated by the chemist Paul Emile Lecoq de Boisbaudranaround 1886.
Properties of Gadolinium
- It is a silvery-white, malleable, ductile rare-earth element. It crystallizes in the hexagonal close-packed α-form at room temperature, but, when heated to temperatures above 1,235 °C (2,255 °F), it transforms into its β-form, which has a body-centered cubic structure.
- The metal does not react in the presence of oxygen but will get tarnished to a form of white oxide in the presence of moist air which protects it from getting further oxidized.
- The Curie point of the metal gd is about 17oc.
- This metal forms binary compounds when it gets mixed with nitrogen, sulfur, carbon, phosphorus, selenium, boron, silicon, arsenic at higher temperatures.
Uses of Gd
- The alloys of gadolinium are utilized in the manufacture of magnetic and electronic gadgets such as video recorder, etc.
- These are highly used in the nuclear power reactors of the nuclear power plants as control rods.
- The isotope of gadolinium Gd is widely employed in curing tumors and neutron therapy.
- Gadolinium gallium garnet is used for the imitation of diamonds.
- The metal is also used for many high-temperature devices as it has good resistivity.