The strength of a permanent magnet is typically measured by its magnetic flux density (measured in teslas or Gauss). The strength of the magnet depends on its material:
– Neodymium magnets (NdFeB) are the strongest, capable of producing fields over 1.4 teslas.
– Samarium-cobalt magnets (SmCo) are strong but not as powerful as NdFeB magnets.
– Ceramic magnets and Alnico magnets have lower magnetic strengths compared to NdFeB and SmCo.