Final answer:
Ferromagnetic materials retain magnetization and exhibit hysteresis, while non-magnetic materials do not.
Step-by-step explanation:
Ferromagnetic materials, such as iron, have groups of dipoles called domains that align with an applied magnetic field and remain magnetized even after the field is removed. On the other hand, non-magnetic materials, such as aluminum or platinum, do not become magnetized in an external magnetic field and lose any magnetism when the field is removed.
The thermodynamics of magnetic and non-magnetic materials differ in terms of their magnetic properties. Ferromagnetic materials have a permanent magnetization effect known as hysteresis, wherein they retain their magnetization even without an external field. This effect is used in devices like computer hard disk drives. Non-magnetic materials, on the other hand, do not exhibit this hysteresis effect.
In summary, the key difference in the thermodynamics of magnetic and non-magnetic materials lies in their ability to retain magnetization and exhibit hysteresis.