Statement I: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic. Stateme — Solid State Chemistry Question

💡 Solution & Explanation

Statement I is correct: heating ferromagnetic or ferrimagnetic materials above their Curie/Neel temperature randomizes the domain alignments, making them paramagnetic. Statement II is also correct: thermal agitation affects electron spin orientations. However, the change in spin of individual electrons is not the primary explanation for the transition; rather, it is the randomization of the domain orientations.