Does Temperature Affect Magnetic Field Strength in Cosmic Phenomena?

In summary, the strength of a magnetic field is inversely proportional to the temperature of the field generator. This means that as an object gets hotter, its magnetic field gets weaker, and as an object gets colder, its magnetic field gets stronger. However, in the case of planets and stars, the magnetic field strength is generally stronger than outside due to flux being constant and constrained into a smaller volume. The vacuum, although very cold, does not have anything to drive a macroscopic magnetic field, resulting in a magnetic field strength of zero. The high velocities of cosmic rays are still not clearly determined.
  • #1
Antonio Lao
1,440
1
It is an experimental fact that the strength of a magnetic field is inversely proportional to the temperature of the field generator.

Can we conclude from this that the hotter an object is, the weaker is its magnetic field. Conversely, the colder an object is, the stronger is its magnetic field.

This could mean that the magnetic field in the interior of planets and stars is very weak. Since the vacuum is very cold, its magnetic field must be very strong. This field is strong enough to drive the motion of cosmic radiation, to which its origin is still not clearly determined.
 
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  • #2
If temperature were the only thing affecting magnetic field strength, then yes you could conclude that the hotter something is, the weaker its field. However, in truth, magnetic field strength in stars and planets is generally stronger than it is outside, because flux is constant, and inside, it is constrained into a smaller volume.

And vacuum is very cold, but it also does not have anything to drive a macroscopic magnetic field, so it's magnetic field strength is zero.
 
  • #3
Icarus said:
And vacuum is very cold, but it also does not have anything to drive a macroscopic magnetic field, so it's magnetic field strength is zero.

What is the cause of the high velocities of cosmic rays?
 

What is the relationship between temperature and magnetism?

The relationship between temperature and magnetism is complex and not fully understood. In general, an increase in temperature can cause a decrease in magnetic strength, but this can vary depending on the material and its properties.

Can temperature affect the strength of a magnet?

Yes, temperature can affect the strength of a magnet. As the temperature increases, the atoms in the magnet vibrate more, which can cause the magnetic domains to become disordered and weaken the overall magnetic field.

What is the Curie temperature?

The Curie temperature is the temperature at which a material's magnetic properties change. Above this temperature, the material will lose its magnetic properties and become paramagnetic, meaning it is weakly attracted to a magnet.

How does temperature affect the magnetization of a material?

Temperature can affect the magnetization of a material by altering the alignment of its magnetic domains. At low temperatures, the domains are aligned and the material is magnetized. As the temperature increases, the domains become more disordered and the material loses its magnetization.

Can temperature be used to control magnetism?

Yes, temperature can be used to control magnetism. By changing the temperature, the magnetic properties of a material can be altered, which can be useful in various applications such as magnetic storage devices and sensors.

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