What is Samarium used for?

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Samarium is used to make samarium-cobalt (SmCo) magnets, which are powerful permanent magnets with high resistance to demagnetization and high-temperature stability, ideal for applications like wind turbines and electric vehicle motors. It is also used in nuclear reactors as a neutron-absorbing material in control rods, to produce lasers and infrared-absorbing glass, and as a component in medical treatments for bone cancer pain.
 
Here's a breakdown of its uses:
Magnets

• High-temperature magnets:
  When alloyed with cobalt, samarium creates powerful samarium-cobalt magnets that maintain their magnetic properties at high temperatures, making them suitable for use in high-temperature environments. 
• Demagnetization resistance:
  These magnets are highly resistant to demagnetization, making them excellent for applications in headphones, electric guitar pickups, and motors. 

Nuclear Applications 

• Control rods: Samarium's strong neutron absorption properties make it an effective material for control rods in nuclear reactors to control the nuclear fission process.

Optical and Lasers 

• Infrared-absorbing glass:
  Samarium compounds are added to glass to create lenses and other optical devices that absorb infrared radiation.

• Lasers and masers:
  Calcium fluoride crystals doped with samarium are used in lasers and masers (the microwave equivalent of lasers).

Medical Uses 

• Bone pain treatment: The radioactive isotope samarium-153 (Quadramet) is used as a radiopharmaceutical to treat pain associated with bone metastases.

Other Uses

• Lighter flints: Samarium is a component of Misch metal, which is used to make the flints for lighters. 

• Catalyst: Samarium compounds act as catalysts in certain chemical reactions.