Study on Magnetic Behavior of Nd8Fe84Ti2B6 Nanocomposite by FORC Diagram

Systematic investigation was made on the magnetic property of a series of Nd2Fe14B/α-Fe nanocomposites prepared by crystallization of amorphous Nd8Fe84Ti2B6 ribbon at annealing temperatures in the range of 800-860 °C. Both remanence and energy product increase with increasing annealing temperature, reaching the maximum values at 850 °C. Coercivity remains around 5.5 kOe for the annealing temperatures above 800 °C. Although the smooth demagnetization curve indicates effective exchange coupling between the Nd2Fe14B/α-Fe dual phases, FORC diagram reveals the existence of α-Fe for the Nd8Fe8...