What is terbium?

Is one of the rarest of the lanthanides and is often substituted with dysprosium, due to the similar physical and chemical properties. It is used for the coloured phosphors it produces and in permanent magnets, in the production of:

  • Actuators and sonar transceivers
  • Xray screens
  • Hybrid cars and wind turbines
  • Stabiliser in fuel cells
  • Televisions