Barium is a divalent alkaline earth metal (atomic number 56) characterized by high chemical reactivity, particularly toward oxygen, water, and halogens, and is therefore typically handled and studied in the form of its compounds rather than as the free metal. In scientific topics it is notable for forming a wide range of inorganic salts with distinctive physical and spectroscopic properties, including high atomic number and density that make barium species important in X-ray imaging, fluorescence, and scattering studies. Barium’s reactivity, ionic radius, and coordination behavior are central parameters in research on solid-state materials, ceramics, and ionic conductors.
A material made from yttrium, barium and copper oxide (better known as YBCO) has intrigued scientists since its discovery in 1987, largely because it retains its superconductive properties at a higher-than-normal temperature. ...
Superconductivity
Jul 13, 2026
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Even with regular brushing, teeth can become stained from genetic factors or consuming foods and drinks like tomatoes and coffee. Chemical whiteners can help, but they can also damage teeth in the process. So, researchers ...
Bio & Medicine
Jan 26, 2026
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Brazil nuts are an especially nutrient-rich source of food: They contain important minerals like calcium and magnesium, essential amino acids and unsaturated fatty acids. Brazil nuts are characterized by very high selenium ...
Plants & Animals
Dec 22, 2025
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76
Metal peroxide (MO2, M=Ca, Sr, Ba) is an alternative to hydrogen peroxide (H2O2). It has excellent oxidative properties, superior chemical stability, high purity, and is easy to store and transport. It has been widely used ...
Nanomaterials
Oct 28, 2024
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