Europium

Europium (Eu) — 10-Year Trends

As of 2026-09-25 · the last 10 years

Research intensity stands at about 95% of the element's all-time peak, a high point reached within this window in 2024.

Research intensity ran from about 83% of the element's own all-time peak in 2016 to about 95% in 2026 — a rise to a mid-window peak followed by a fall back, and the all-time peak (2024) falls inside this window. Over the same span its share of research attention across all elements rose. Among the 118 elements, europium has a larger-than-average research literature.

The number of papers involving the element rose from about 1,868 in 2016 to about 3,627 in 2025 (1.94x). That is slower than the literature as a whole grew over the same years, so the element lost ground in the wider body of research even as its own count rose.

The largest distinct research community is Europium Luminescence and Polarized Optical Properties, where papers focus on the photophysical behavior of europium complexes, specifically analyzing circularly polarized luminescence and energy transfer mechanisms. Europium is one strand of a broader community, with about 10% of its papers involving the element. This community holds about 22.7% of europium's recent research, a share that has declined from 28.5% in the previous period. A key anchor is a 2024 paper on aggregation-induced emission dynamic chiral europium(III) complexes, cited over 100 times.

The second major community is Europium Doping in Luminescent Phosphor Materials, focused on synthesizing europium-doped host lattices like strontium aluminate to study their luminescence properties. Here, europium is a minor presence in a much larger community, accounting for about 4% of its papers. It represents about 13.4% of europium's recent research, a steady share compared to the previous period. A notable 2022 study on near-infrared light-emitting diodes utilizing a europium-activated calcium oxide phosphor was cited over 310 times.

A third community, Europium Fluorescent Sensors for Tetracycline and Anthrax Detection, involves europium(III) complexes in metal-organic frameworks serving as ratiometric fluorescent probes for detecting tetracycline antibiotics and anthrax biomarkers. Europium is a minor presence in this much larger community, with about 1% of its papers involving the element. This area accounts for about 5.3% of europium's recent research, a steady share. A 2021 paper on a portable test strip based on fluorescent europium-based metal–organic framework for rapid and visual detection of tetracycline in food samples was cited over 300 times.

Overall, the composition of europium research has shifted slightly, with the luminescence and polarized optical properties community losing share while the remainder of the literature, comprising other smaller communities, has gained ground.

For a deeper look at the current standing of europium research, see the Last 12 Months and Executive Brief reports.