Colour-TV screens
X-ray screens
Neutron absorvers
Computer memories

Up until 1964 europium was used primarily as a neutron absorbing component of control rods in nuclear reactors. Even here the use was limited due to the high cost and total consumption was relatively small. The real impact on the rare earth industry came with the announcement of the development of a new red phosphorus for color television: europium-activated yttrium orthovanadate to replace the silver-activated zinc-cadmium sulfide.

After this consumption of europium and yttrium has increased in relation to the enormous growth of the color television industry.