Long term magnetic repulsion with permenant magnets?

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SUMMARY

Neodymium magnets, commonly used in magnetic levitation projects, exhibit a coercivity of 1.2, indicating their ability to maintain magnetic strength under opposing magnetic fields. However, constant exposure to such fields can lead to demagnetization over time, although neodymium's properties allow it to retain its strength longer than most materials. Despite being termed 'permanent', these magnets are not immune to weakening, particularly under varying temperature conditions.

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  • Understanding of magnetic fields and their interactions
  • Knowledge of neodymium magnet properties
  • Familiarity with coercivity and its significance
  • Basic principles of temperature effects on magnetism
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i have a set of neodynium magnets which i am using for a magnetic levitation project... will the constant exposure to an opposing magnetic field weaken the magnets over time? are 'permenant' magnets really permenant?
 
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The reverse magnetic field can tend to demagnetize. The extent depends on the material of the magnet and temperature.
 
the coercivity of neodymium is 1.2 , which is supposed to be greater than most materials... this means that , in the same conditions, neodymium would keep its magnetic strength for longer than most materials, but not indefinitely?
 

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