gadolinium

Gadolinium is a chemical element that has the symbol Gd and atomic number 64.

Gadolinium is a silvery-white, malleable and ductile rare-earth metal with a metallic lustre. It crystallizes in hexagonal, close-packed alpha form at room temperature, but, when heated to 1508 K or more, it transforms into its beta form, which has a body-centered cubic structure.

Unlike other rare earth elements, gadolinium is relatively stable in dry air. However, it tarnishes quickly in moist air, forming a loosely-adhering oxide which spalls off, exposing more surface to oxidation. Gadolinium reacts slowly with water, and is soluble in dilute acids.

Gadolinium-157 has the highest thermal neutron capture cross-section of any known nuclide with the exception of xenon-135, 49,000 barns, but it also has a fast burn-out rate, limiting its usefulness as a nuclear control rod material.[2]

Gadolinium is strongly paramagnetic at room temperature, and exhibits ferromagnetic properties below room temperature.

Gadolinium demonstrates a magnetocaloric effect whereby its temperature increases when it enters a magnetic field and decreases when it leaves the magnetic field. The effect is considerably stronger for the gadolinium alloy Gd5(Si2Ge2) .

Source: Wikipedia



The term "gadolinium" was found in the following pages:

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Material database: IRMM - Institute for Reference Materials and Measurements - BCR-668 - Mussel tissue
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Link database: Chemical Fact Sheet: Europium
Material database: American Elements - Gadolinium 160 Oxide Isotope
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Material database: National Analysis Center for Iron & Steel (NACIS) - NCS ZC73013 - Trace Elements in Spinach
Material database: American Elements - Gadolinium 155 Oxide Isotope
Material database: National Analysis Center for Iron & Steel (NACIS) - NCS ZC73014 - Trace Elements in Tea
Material database: National Analysis Center for Iron & Steel (NACIS) - NCS ZC73014 Trace Elements in Tea
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Material database: IRMM - Institute for Reference Materials and Measurements - BCR-670 - Duck weed
Link database: DrugBank: Gadoversetamide
Link database: Gadolinium based MRI contrast agents
European Medicines Agency recommends to pull linear Gadolinium-based MRI contrast agents from market | EVISA's News
Link database: Chemical Fact Sheet: Yttrium
Detection of Gd-based contrast agent in the skin of a patient eight years after administration | EVISA's News
Scientific publications with participation of EVISA | EVISA's News