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2. Neodymium magnet - Wikipedia

   en.wikipedia.org/wiki/Neodymium_magnet

   Neodymium magnet

3. Prices of chemical elements - Wikipedia

   en.wikipedia.org/wiki/Prices_of_chemical_elements

   Prices of chemical elements

4. Neodymium - Wikipedia

   en.wikipedia.org/wiki/Neodymium

   Neodymium - Wikipedia ... Neodymium

5. Orders of magnitude (magnetic field) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude...

   Magnetic induction B (also known as magnetic flux density) has the SI unit tesla [T or Wb/m 2]. [1] One tesla is equal to 10 4 gauss. Magnetic field drops off as the inverse cube of the distance (⁠ 1 / distance 3⁠) from a dipole source. Energy required to produce laboratory magnetic fields increases with the square of magnetic field.

6. Praseodymium - Wikipedia

   en.wikipedia.org/wiki/Praseodymium

   Praseodymium - Wikipedia ... Praseodymium

7. Rare-earth magnet - Wikipedia

   en.wikipedia.org/wiki/Rare-earth_magnet

   A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. The magnetic field typically produced by rare-earth ...