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:

Link database: Gadolinium Toxicity
Atomic Spectroscopy Virtual Symposium "C is for Chromatography'' | EVISA's Agenda of Events
Link database: DrugBank: Gadodiamide
FDA investigating risk of gadolinium contrast agent brain deposits | EVISA's News
Brief summary: Speciation analysis for the study of metallo-drugs and their biomolecular interactions | EVISA's News
Material database: Institute of Nuclear Chemistry and Technology (INCT/ICHTJ) - CTA-FFA-1 FINE FLY ASH
Material database: IRMM - Institute for Reference Materials and Measurements - ERM-CC690 - Calcareous Soil
Material database: United States Pharmacopeial Convention (USP) - Gadodiamide
Link database: Chemical Fact Sheet: Yttrium
Speciation analysis of Gadolinium-based contrast agents using hydrophilic interaction liquid chromatography hyphenated with inductively coupled plasma-mass spectrometry by avoiding organic solvents | EVISA's News
Material database: National Analysis Center for Iron & Steel (NACIS) - NCS ZC73013 - Trace Elements in Spinach
FDA panel calls for warning labels on gadolinium-based contrast agents for MRI | EVISA's News
EMA Issues Final Opinion Limiting Gadolinium Contrast Agents in Body Scans | EVISA's News
U.K. issues new advice on the use of gadolinium-based contrast agents | EVISA's News
Speciation analysis for cancer diagnosis | EVISA's News
Group 2 gadolinium-based contrast agents seem to be safe even for patients with chronic kidney disease | EVISA's News
Material database: American Elements - Gadolinium 156 Oxide Isotope
Material database: Institute of Nuclear Chemistry and Technology (INCT/ICHTJ) - CTA-AC-1 APATITE CONCENTRATE
Material database: American Elements - Gadolinium 158 Oxide Isotope
Link database: RSC Periodic Table: Gadolinium