In which scenario would a material transition from ferromagnetic to paramagnetic?

A material transitions from ferromagnetic to paramagnetic when it is exposed to high temperatures. At high temperatures, thermal energy can disrupt the alignment of the magnetic moments in a ferromagnetic material. In the ferromagnetic state, the magnetic moments of atoms are aligned in the same direction, which results in a net magnetic moment. However, as temperature increases, the increased kinetic energy causes these moments to become misaligned, weakening the magnetic properties of the material. Once the temperature exceeds the Curie temperature, the organization needed for ferromagnetism is lost, and the material behaves as a paramagnet.

In contrast, materials that are cooled below the Curie temperature would retain their ferromagnetic properties. When magnetized, a material that is ferromagnetic maintains its magnetic properties due to aligned magnetic domains, while rotation generally does not affect the magnetic state. The key factor is how temperature influences the ordering of magnetic moments in the material.