Cerium, one of nature's purest puzzles

Cerium is one of the most fascinating elements of the periodic system. In its elemental form it exhibits several phases like an antiferromagnetic-, a paramagnetic- and asuperconducting-phase. It is the only element with a solid-solid critical point and Kondo scatteringt. Many of these properties are attributed to the single localized 4f electron close to the Fermi level. Zie: Abstracts