Explain magnets at the subatomic level to me?

In summary, the Pauli exclusion principle does not apply to electrons in different nuclei and is not the main source of magnetization in materials. A single atom of hydrogen can exhibit some magnetic properties, but may not make a good permanent magnet. The spin of an electron can contribute to its magnetic moment and can create a magnetic field when it spins.
  • #1
kashiark
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Can someone explain magnets at the subatomic level to me? According to wikipedia, many of the electrons' spins are oriented in the same direction; what happened to the Pauli exclusion principle? Is it something to do with the electrons being delocalized that changes the other quantum numbers? Is a single atom of hydrogen magnetic?
 
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  • #2
kashiark said:
According to wikipedia, many of the electrons' spins are oriented in the same direction; what happened to the Pauli exclusion principle?

Hi kashiark! :smile:

The Pauli exclusion principle will only apply to electrons around the same nucleus …

they can't be in the same states …

but electrons round different nuclei are in different states anyway. :wink:
 
  • #3


Wiki notes at

http://en.wikipedia.org/wiki/Magnetism

In magnetic materials, the most important sources of magnetization are, more specifically, the electrons' orbital angular motion around the nucleus, and the electrons' intrinsic magnetic moment

Is a single atom of hydrogen magnetic?

If you read the above reference you'll find that "magnetic" vs "non magnetic" does not have a precise line of demarcation. My guess is that if you put almost any atom or particle in a strong enough magnetic field it will align itself at least in part with the magnetic field due to either electric charge, spin, or other factors.

Hydrogen would likely not make a good permanent magnet for use in a simple electric motor.
 
  • #4


What exactly is a magnetic moment? How does the spin of a single electron create a magnetic field when it spins?
 

1. How do magnets work at the subatomic level?

Magnets work at the subatomic level due to the alignment and movement of electrons within the material. Electrons have a property called spin, which creates a tiny magnetic field. In a magnet, the majority of electrons spin in the same direction, creating a strong magnetic field.

2. What is the role of protons and neutrons in magnets?

Protons and neutrons, which make up the nucleus of an atom, also have a property called spin. In ferromagnetic materials, such as iron, these spins align with the electrons, adding to the overall magnetic field of the material.

3. How do opposite poles attract and like poles repel at the subatomic level?

Magnets have a north and south pole, which correspond to the direction of the magnetic field. When two magnets are brought close together, the magnetic fields interact with each other. Opposite poles attract because their magnetic fields align and reinforce each other, while like poles repel because their magnetic fields oppose each other.

4. Can magnets lose their magnetism at the subatomic level?

Yes, magnets can lose their magnetism at the subatomic level. This can happen if the electrons in the material are disturbed or the alignment of their spins is disrupted. High temperatures, strong external magnetic fields, and physical shocks can all cause a magnet to lose its magnetism.

5. How do scientists study magnets at the subatomic level?

Scientists use various techniques, such as electron microscopy and magnetic force microscopy, to study magnets at the subatomic level. These techniques allow them to observe and manipulate individual atoms and electrons to understand the behavior of magnets. Additionally, theoretical models and simulations are also used to study magnetism at the subatomic level.

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