How Do You Classify Materials Based on Magnetic Susceptibility?

[Max Eilerson]

Hi,

I'm just given the magnetic susceptibiliy of materails $$\chi$$, for which I'm supposed to identify what class of magnetic materail they belong too. Some basic rules are listed in the notes.

Ferromagnets $$\chi > 0, u >> 1$$

cold rolled steel 2250
Monimax 669


Paramagnets $$\chi > 0, u > 1$$

Oxygen (liquid at -219 C) 3.9E-4
Manganese 1.0E-6
Chorium 4.5E-6

Diamagnet ($$\chi < 0, u < 1$$

Ice - 8.1E-6 (I know ice XI is ferrielectric)
Helium - 0.58E-6

However I looked on wiki and it appears Chormium is antiferromagnetic and manganese is non-magnetic. I'm fairly sure sure helium is a superconductor. This is question 1, on an easy work sheet so I'm not sure what to answer.

 

[Nate810]

From the values you have provided, it looks like cold rolled steel and Monimax are ferromagnets, Oxygen is a paramagnet, Ice is a diamagnet, and Helium is a superconductor. However, since you have noted that Chrome is antiferromagnetic and Manganese is non-magnetic, it would be best to double check with other sources before making your final decision.

 

[kyle8921]

I would recommend double checking your sources to ensure accuracy before making any conclusions. While Wikipedia can be a useful starting point, it is important to verify information from multiple reliable sources. Additionally, the magnetic susceptibility of a material can vary depending on factors such as temperature and applied magnetic field, so it is important to consider these factors as well. If you are unsure about the classification of a material, it may be helpful to consult with a more experienced scientist or conduct further research to confirm your findings.