# Why can't diamagnetic, and paramagnetic magnetize?

Ferromagnetic materials can be made into permanent magnets. How come diamagnetic, and paramagnetic materials be made into magents? Does it have to do with the valence electrons, and how they are arranged, and their spin?

• You had requested this this be moved to Physics, but I don't think this is a very clear question. Do you mean how can they be made into magnets or why can they be made into magnets? A bit of initial research would be helpful if you are going to repost it over there, otherwise, it will end up closed. Jul 16 '16 at 20:33
• I think this question is a grey area where material science meets physics, and is appropriate on either Chemistry or physics stack exchanges.
– A.K.
Jul 17 '16 at 3:39

• PARAMAGNETISM and DIAMAGNETISM depends on the number of unpaired electrons present in a system. The presence of unpaired electron to the system gives it a magnetic moment (given by $\mu=\sqrt{n(n+1)}$, in Bohr Magenton , where n is the number of unpaired electrons). Hence the number of unpaired electrons, i.e. the excess number of electrons in the same spin, determines the magnetic moment. A material is called diamagnetic if the value of $\mu = 0$.
However, this is possible through chemical methods. For example, $\ce{[Fe(CO)6]^{3+}}$ is diamagnetic while $\ce{[Fe(H2O)6]^{3+}}$ is paramagnetic. However, this is not magnetizing, it is just changing what you are working with.