Elements of the month - Erbium (Er) & Terbium (Tb)

2019-10-10

This year it's 150 years ago that Dmítriy Ivánovich Mendeléyev first published the Periodic Law that would later become the periodic table. Unesco has decided to celebrate this by calling 2019 "International Year of the Periodic Table of Chemical Elements" (IYPT).

Erbium and Terbium is the tenth and eleventh element in our series of elements found by Swedish researchers.

Erbium is a rare metal that is often found but in such low quantities that it still counts as rare. Erbium was named after the Ytterby mine in Stockholms archipelago and was found by Carl Gustaf Mosander in 1843.

Usage areas are among others, optical fibers. Erbium-doped optical silica-glass fibers are the active element in erbium-doped fiber amplifiers, which are widely used in optical communications. The same fibers can be used to create fiber lasers. In order to work efficiently, erbium-doped fiber is usually co-doped with glass modifiers/homogenizers, often aluminum or phosphorus. These dopants help prevent clustering of Er ions and transfer the energy more efficiently between the Er ions and the signal.

Terbium was found in connection to Erbium and consequently in the same Ytterby mine by the same researcher, Carl Gustaf Mosander and also in 1843. Terbium is mainly used in different light/laser sources due to it's fluorescent glow. It's also used as a picture component in TV-monitors.

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Elements of the month - Erbium (Er) & Terbium (Tb)

2019-10-10

This year it's 150 years ago that Dmítriy Ivánovich Mendeléyev first published the Periodic Law that would later become the periodic table. Unesco has decided to celebrate this by calling 2019 "International Year of the Periodic Table of Chemical Elements" (IYPT).

Erbium and Terbium is the tenth and eleventh element in our series of elements found by Swedish researchers.

Erbium is a rare metal that is often found but in such low quantities that it still counts as rare. Erbium was named after the Ytterby mine in Stockholms archipelago and was found by Carl Gustaf Mosander in 1843.

Usage areas are among others, optical fibers. Erbium-doped optical silica-glass fibers are the active element in erbium-doped fiber amplifiers, which are widely used in optical communications. The same fibers can be used to create fiber lasers. In order to work efficiently, erbium-doped fiber is usually co-doped with glass modifiers/homogenizers, often aluminum or phosphorus. These dopants help prevent clustering of Er ions and transfer the energy more efficiently between the Er ions and the signal.

Terbium was found in connection to Erbium and consequently in the same Ytterby mine by the same researcher, Carl Gustaf Mosander and also in 1843. Terbium is mainly used in different light/laser sources due to it's fluorescent glow. It's also used as a picture component in TV-monitors.