Why magnet can attract liquid oxygen but not aluminium?both paramagnet

[Outrageous]

A magnet only attract ferromagnetic material because they have magnetic domains which will align to form magnetic dipole when external magnetic field applied.
Paramagnet don't have domains. Due to the presence of some unpaired electron, they will cause the realignment of the electron path when external magnetic field applied.
So they should be attracted by magnet also, eg liquid oxygen.
But why not aluminium ? is that because of the temperature or the mass of the paramagnetic material?
Thank you

 

[davenn]

hi there

interesting question ... I was unaware that LOX was paramagnetic till now
here's one link to a site showing some easy to do experiments.

Yes it is to do with the unpaired electrons see this site

Aluminium is deemed paramagnetic see this link to Wiki

cheers
Dave

 

[voko]

Temperature has a direct bearing on paramagnetism. See Curie's law.

 

[Andy Resnick]

A magnet only attract ferromagnetic material because they have magnetic domains which will align to form magnetic dipole when external magnetic field applied.
Paramagnet don't have domains. Due to the presence of some unpaired electron, they will cause the realignment of the electron path when external magnetic field applied.
So they should be attracted by magnet also, eg liquid oxygen.
But why not aluminium ? is that because of the temperature or the mass of the paramagnetic material?
Thank you

Are you perhaps confusing paramagnetism with Eddy currents?

 

[sardar]

for your question. The reason why a magnet can attract liquid oxygen but not aluminium is due to the differences in their magnetic properties. As you mentioned, both liquid oxygen and aluminium are paramagnetic materials, meaning they have unpaired electrons that can be influenced by an external magnetic field. However, the strength of their magnetic properties varies.

In the case of liquid oxygen, it has a stronger paramagnetic effect due to its low boiling point and therefore, its molecules are more easily affected by external magnetic fields. This allows the liquid oxygen to be attracted to a magnet.

On the other hand, aluminium has a weaker paramagnetic effect due to its higher boiling point and the stronger bonds between its atoms. This makes it less likely to be influenced by an external magnetic field, resulting in a weaker attraction to a magnet.

Therefore, it is not due to the temperature or mass of the paramagnetic material, but rather the strength of its magnetic properties that determines its attraction to a magnet. I hope this explanation helps to clarify your question.