Relevance: GS-III (Economy; Science and Technology; Internal Security)

The Context
A handful of rare earth elements power high-efficiency motors, wind turbines and precision weapons. China dominates mining and, more critically, separation and processing, and has tightened export controls on technologies and intermediates.

The five to watch

• Neodymium (Nd): core of neodymium-iron-boron permanent magnets for motors and earphones.
  
• Praseodymium (Pr): blended with neodymium to improve magnet strength and heat resistance.
  
• Dysprosium (Dy): adds high-temperature stability to electric-vehicle and wind-turbine magnets.
  
• Terbium (Tb): further improves performance in compact, heat-stressed devices.
  
• Samarium (Sm): samarium-cobalt magnets for aerospace and defence where corrosion resistance matters.
  

Why the control matters

• Processing dominance means price power and supply shocks.
  
• Export reviews on magnet-making know-how slow new entrants.
  
• Downstream sectors—electric vehicles, drones, radars—face planning risk.
  

India’s pathway

• Map and develop monazite and other resources with strict environmental safeguards.
  
• Accelerate joint ventures through Khanij Bidesh India Limited and with trusted partners for mining, separation and magnet-making, not just ore.
  
• Create a Critical Minerals Mission, recycling norms, and public procurement targets for India-made magnets.
  
• Support research on dysprosium-lean magnets and substitution.
  

Exam hook – 

Prelims practice
Which pair is correctly matched?
(a) Dysprosium — improves magnet performance at high temperature
(b) Samarium — used only for fertilisers
(c) Terbium — reduces magnet strength
(d) Praseodymium — used solely in fireworks
Answer: (a)

One-line wrap: Secure ore, master processing, and build magnet factories—that is how India cuts strategic risk from rare earths.