Some Factors Which Can Affect The Stability Of The Rare Earth’s Magnet


There are certain factors that affect the earth’s Magnet stability. Elements such as time, temperature, adverse fields and few other different things can affect the stability of the earth’s magnet.

There are other factors like changes in reluctance, radiation, and improper handling can affect the stability of the rare earth’s magnetic field. Visit various e-libraries and other reference books to read more about disc magnets.

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Time can have a minimal effect on the stability of the earth’s rare magnet.  Magnetic creep is the term used in such kind of effect. The earth’s magnet loses only about 3% of its magnetism in over a time period of about 100000 hrs of its use. The decline of the magnetism depends on the actual usage amount not just on time passage from the manufactured time.


The rare magnet has a particular temperature range as the Curie temperature. The earth magnet has the highest magnetic field when the climatic setting is within a stated range. The extreme temperatures as too warm or too hot will reduce the magnet’s magnetic field. Each magnet has a curie point. If the magnet gets heated to the Curie point, then eventually, it will get de-magnetized and thus, loses its properties of magnet.

Reluctance Changes

The magnets are being placed within a particular device to make sure that there is no permeance change occurring that interfere its magnetic field’s strength. The permeance change is the change occurring as a result of gap in air dimensions. Increase or a decrease in the gap may weaken the magnetic field of the magnet.

Adverse fields

Adverse field is the term, which refers external fields of a magnet or other magnetic fields within a range that could affect the magnet. The de-magnetizing effect of the rare earth magnet depends on the other field’s strength. This could altogether negate the magnetic properties or could decrease in varying degrees.


Exposing the rare earth’s magnet to the radiation may affect its stability less than other types. Radiation can also de-magnetized various or all types of other magnets. Even if the rare earth magnet type is known for functioning well in the radiated conditions, you should first pre-exposed to it to make sure the magnet has a chance that it can stabilize in such types of environments.


  • Improper handling of magnets will affect the stability of the magnet. For example, if the rare earth’s magnet is subjected to stress, shock or to intense vibration, then it may possibly damage or chipped.
  • You should always handle magnets properly in order to safeguard them from chipping and damage. Rare earth magnets are much more brittle in comparison to other magnets and are greater prone to chipping.

The magnet of rare earth seldom loses its magnetism. Even if it loses its magnetism, the loss is minimal and is recoverable or reversible. So it is great choice for various modern devices. The above given elements may affect the magnetic fields of the rare magnet and care must be taken in handling them.