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:

Atomic Spectroscopy Virtual Symposium "C is for Chromatography'' | EVISA's Agenda of Events
The retention of gadolinium in the human body following the use of gadolinium-based MRI contrast agents: a call to action for analytical chemists | EVISA's News
Link database: DrugBank: Gadopentetate dimeglumine
Link database: Gadolinium based MRI contrast agents
New Strategy for Speciation Analysis of Gadolinium retained in Bone after Application of MR Contrast Agents | EVISA's News
Material database: American Elements - Gadolinium 160 Oxide Isotope
Material database: IRMM - Institute for Reference Materials and Measurements - BCR-667 - Estuarine Sediment
Material database: United States Pharmacopeial Convention (USP) - Gadodiamide Related Compound A
Link database: Chemical Fact Sheet: Curium
Link database: RSC Periodic Table: Gadolinium
Material database: National Analysis Center for Iron & Steel (NACIS) - NCS ZC73036 - Trace Elements in Green Tea
Group 2 gadolinium-based contrast agents seem to be safe even for patients with chronic kidney disease | EVISA's News
Copper(II)-binding equilibrium in human blood | EVISA's News
Link database: DrugBank: Gadodiamide
Experts in Bioimaging came together in Münster, May 24-25, 2018 | EVISA's News
Fast and Automated Monitoring of Gadolinium-based Contrast Agents in Surface Waters | EVISA's News
The behavior of Gd-based contrast agents during wastewater treatment | EVISA's News
Material database: JRC - Joint Research Centre - ERM-CC690 - Calcareous Soil
Link database: Mineral Information Institute: Rare Earth Elements
Material database: IRMM - Institute for Reference Materials and Measurements - ERM-CC690 - Calcareous Soil