Fe3O4 is ferrimagnetic at room temperature but at 850 K it becomes _______.
A. Diamagnetic
B. Ferromagnetic
C. Non-magnetic
D. Paramagnetic
Answer:D
Fe3O4 is ferrimagnetic at room temperature but at 850 K it becomes _______.
A. Diamagnetic B. Ferromagnetic C. Non-magnetic D. Paramagnetic