Difference Between Permanent Magnet and Temporary Magnet

Main difference

The main difference between permanent magnet and temporary magnet is that permanent magnet is the magnet of permanent permanent magnetic properties while temporary magnet is the magnet of permanent magnetic properties remain impermanent.

Permanent magnet vs temporary magnet

A permanent magnet is the type of magnet that does not need any external magnetic field to remain fully magnetized, while a temporary magnet is the type of magnet that needs an external magnetic field to remain fully magnetized. The properties of permanent magnets do not change; On the other hand, a temporary magnet is a magnet whose magnetic properties change continuously. A permanent magnet is made from hard materials, while a temporary magnet is made from soft materials.

The magnetic poles of the permanent magnet can never be reversed; On the other hand, the magnetic properties of a temporary magnet can be reversed. The strength of a permanent magnet field never changes, while the strength of a temporary magnet always changes with conditions. The permanent magnet never requires electricity to behave like a magnet, while the temporary magnet always requires electricity to behave like a magnet. Permanent magnet is also called a bar magnet while a temporary magnet is also called an electromagnet.

A permanent magnet has an unchanging magnetic force; on the other hand, a temporary magnet has a variable magnetic force. A permanent magnet is more stable than temporary magnet while temporary magnet is less stable than permanent magnet. The magnetic field of a permanent magnet does not disappear when the external magnetic field disappears, while the magnetic field of a temporary magnet disappears when the external magnetic field disappears.

The domains of a permanent magnet, once aligned, can never be easily reversed, while the domains of a temporary magnet, once aligned, can easily be reversed. A permanent magnet is the type of magnet in physics that is made from a hard type of permanent ferromagnetic materials; On the other hand, a temporary magnet is the type of magnet in physics that is made from a type of ferromagnetic temporary materials.Comparison chart

Permanent magnet temporary magnet
Permanent magnet is the magnet whose magnetic properties remain permanent. Temporary magnet is the magnet whose magnetic properties remain impermanent.
Made of
Made of hard materials Made of soft materials
magnetic properties
Constant To vary
Stability
More stable less stable
domains
stay aligned does not stay aligned
Magnetic field
Does not disappear when the external field disappears Disappear when the external magnetic field disappears
magnetic poles
cannot be reversed can be reversed
Other name
magnetic bar Electromagnetic
Electric current
no need electricity need electricity
external magnetic field
It does not need an external magnetic field. You need an external magnetic field.
Example
Iron Steel

What is a permanent magnet?

A permanent magnet is the type of magnet in physics that cannot change its magnetic properties with the change in changing external conditions. It means that the magnetic properties of the permanent magnet remain preserved regardless of external conditions. The permanent magnet is generally considered to be more stable than the other types of temporary magnets.

The domains of a permanent magnet are considered to be permanently aligned and cannot be easily returned to their dimensionless motion. The magnetic poles of the permanent magnet cannot be easily changed and cannot reverse their direction. Another name to call permanent magnet is called bar magnet and hard magnet. It is made of different types of hard materials.

The external magnetic field does not need to magnetize the hard magnet or bar magnet. Electrical energy is necessary to magnetize the magnetic. The magnetic field does not disappear when the external field is removed. Permanent magnets are usually made by special mixing of hard and solid materials to get the right magnetic properties, such as steel, copper, aluminum, cobalt, etc.

It has a long-range magnetic field for the convenience of determining different properties of the substance and gives it its unique characteristics. The behavior of magnets can be identified using the hysteresis loop of the material. Examples of the permanent magnet are Ferrites, a complete mixture of cobalt, strontium, iron and nickel oxides, and Alnico, a mixture of iron, nickel, aluminum and cobalt, etc.

What is a temporary magnet?

Temporary magnet is the type of magnet in physics that has special abilities to change its magnetic properties with the change in changing external conditions. It means that the magnetic properties of the temporary magnet are not preserved even if the external conditions are. The temporary magnet is less stable than the other types of permanent magnets in the field of physical engineering.

The domains of a temporary magnet do not remain permanently aligned and continually change with the change in the external magnetic field, and can easily return to their original conditions. Another name to call the temporary magnet is called soft magnet or electromagnet. The external magnetic field is completely necessary to magnetize and demagnetize magnetic materials.

It is made of different soft, malleable and ductile materials. The external magnetic field is very vital for its magnetization. Electrical energy is necessary for the magnetization of soft or electromagnetic domains. The poles of an electromagnet can easily be reversed or switched in direction. The behavior of the magnetic behavior of the electromagnet disappears immediately when the external magnetic field disappears.

Soft magnet is usually made by mixing the soft and malleable materials to give special and unique properties to the magnet, like soft iron etc. The temporary magnet has short range magnetic fields. Soft iron acts as a core in transformers and is used in powerful magnetic tools such as MRI with permanent magnets. The capacity of a magnet is mainly identified with the help of the hysteresis loop.

The smaller the area of ​​the loop, the more temporary a magnet it will be. The larger hysteresis loop area materials have, the more permanent capacity the magnet will be. Examples of temporary magnet are electromagnet or soft iron etc.

Key differences

  1. A permanent magnet does not require any external magnetic field to remain fully magnetized, while a temporary magnet requires an external magnetic field to remain fully magnetized.
  2. A permanent magnet has attractive properties that do not vary; on the other hand, the temporary magnet has attractive properties that constantly fluctuate.
  3. A permanent magnet is a type of magnet that is made from solid materials, while a temporary magnet is a magnet that is made from spongy materials.
  4. A permanent magnet has magnetic poles that can never be reversed; On the other hand, the temporary magnet has magnetic poles that can be reversed.
  5. A permanent magnet has an unchanging force, while the force of a temporary magnet always changes with circumstances.
  6. The permanent magnet does not need electrical energy to act as a magnet, while the temporary magnet always needs electrical energy to act as a magnet.
  7. Permanent magnet is also called a bar magnet while a temporary magnet is also called an electromagnet.
  8. A permanent magnet has an invariable magnetic power; on the other hand, the temporary magnet has a variable magnetic power.
  9. The stability of the permanent magnet is higher than that of a temporary magnet, while the stability of the temporary magnet is lower than that of the permanent magnet.
  10. The magnetic field in a permanent magnet does not easily disappear as the external magnetic field decreases, while the magnetic field in a temporary magnet disappears as the external magnetic field decreases.
  11. The permanent magnet domains, once arranged in order, can never be changed, while the temporary magnet domains, once arranged in order, can be changed.
  12. Hard ferromagnetic is always included in the category of permanent magnets; On the other hand, soft ferromagnetic is included in the category of temporary magnetic.

Final; Thought

The above discussion concludes that both permanent magnet and temporary magnet are the types of magnets. Permanent magnet is the magnet whose magnetic polarity remains constant while temporary magnet is the magnet whose magnetic polarity varies continuously.

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