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China on Tuesday banned exports to the United States of the critical minerals gallium, germanium and antimony that have widespread military applications, escalating trade tensions the day after ...
* A spokesperson for Sumitomo Chemical, which uses gallium as a raw material in its compound semiconductor business, said the company is monitoring the situation closely and collecting information.
China's export controls on some gallium and germanium products take effect on Tuesday with traders braced for a drop in international supply in August and September while exporters sort out newly ...
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Gallium is a chemical element; it has the symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, [13] gallium is in group 13 of the periodic table and is similar to the other metals of the group (aluminium, indium, and thallium).
The Bridgman method is a popular way of producing certain semiconductor crystals such as gallium arsenide, for which the Czochralski method is more difficult. The process can reliably produce single-crystal ingots, but does not necessarily result in uniform properties through the crystal. [1]
Other effects of the d-block contraction are that the Ga 3+ ion is smaller than expected, being closer in size to Al 3+.Care must be taken in interpreting the ionization potentials for indium and thallium, since other effects, e.g. the inert-pair effect, become increasingly important for the heavier members of the group.