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Gadolinium reacts with atmospheric oxygen or moisture slowly to form a black coating. Gadolinium below its Curie point of 20 °C (68 °F) is ferromagnetic, with an attraction to a magnetic field higher than that of nickel. Above this temperature it is the most paramagnetic element. It is found in nature only in an oxidized form.
The World Health Organization issued a restriction on use of several gadolinium contrast agents in November 2009 stating that "High-risk gadolinium-containing contrast agents (Optimark, Omniscan, Magnevist, Magnegita, and Gado-MRT ratiopharm) are contraindicated in patients with severe kidney problems, in patients who are scheduled for or have ...
Johan Gadolin (5 June 1760 – 15 August 1852) [1] was a Finnish chemist, physicist and mineralogist.Gadolin discovered a "new earth" containing the first rare-earth compound yttrium, which was later determined to be a chemical element.
In 1880 he found gadolinium and samarium in the samarskite earths. [12] The family grave. In 1858, he pointed out the isomorphism of the fluostannates and the fluosilicates, thus settling the then vexed question of the composition of silicic acid. [10] This research helped him to confirm the atomic weights of zirconium and titanium. [9]
Only gadolinium and samarium occur in nature; the rest are man-made. List. These 19 elements are connected to the names of people.
Another example is gadolinium gallium garnet (GGG), Gd 3 Ga 2 (GaO 4) 3 which is synthesized for use as a substrate for liquid-phase epitaxy of magnetic garnet films for bubble memory and magneto-optical applications. [citation needed]
Gadolinium(III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd 2 O 3. It is one of the most commonly available forms of the rare-earth element gadolinium , derivatives, of which are potential contrast agents for magnetic resonance imaging .
Gadolinium, chemical element This page was last edited on 25 December 2024, at 22:10 (UTC). Text is available under the Creative Commons ...