What classification does a material that can be easily magnetized fall into?

A material that can be easily magnetized is classified as ferromagnetic. Ferromagnetic materials have a strong magnetic response and can be permanently magnetized when exposed to a magnetic field. This ability is due to the alignment of magnetic domains within the material, which occurs when the material is subjected to an external magnetic field. Once aligned, these domains can remain in a state of alignment even after the external field is removed, giving ferromagnetic materials their characteristic retention of magnetization.

In contrast, diamagnetic materials exhibit a very weak and negative magnetic response, meaning they are repelled by magnetic fields and do not retain magnetization. Paramagnetic materials, while they do respond to magnetic fields, do so only weakly and do not have the capability to retain magnetization once the external field is removed. Non-magnetic materials do not respond to magnetic fields at all and thus cannot be magnetized. Therefore, the classification of a material that can be easily magnetized is appropriately identified as ferromagnetic.