High coercivity in Nd–Fe–Al based melt-spun ribbons

High coercivity in Nd–Fe–Al–Co–B alloys prepared by mechanical milling

“…A quite high coercive field of about 1.5 T was observed on the Nd 35 Fe 30 Al 10 Co 20 B 5 alloy prepared by suction casting method [8]. The Curie temperature of this as-cast alloy was also raised to 625 K. By melt-spinning method, the coercive field of the Nd 25 Fe 30 Al 10 Co 30 B 5 alloy reached a very high value of 2.3 T and its Curie temperature rose to 680 K [9]. Up to now, most of the investigations of the Nd-Fe-Al based alloys were performed on the samples prepared by rapidly quenched method, casting or melt-spinning.…”

“…For the first discovered ternary Nd-Fe-Al alloys, the highest coercive field, m 0 H c , of about 0.4 T was found on the composition of Nd 60 Fe 30 Al 10 [1][2][3][4]. In order to improve the performance of the alloy, some elements such as Cu, Co, B and Dy were added [5][6][7][8][9][10][11]. The coercive field, saturation magnetization, remanence and Curie temperature of the alloy could be simultaneously enhanced considerably by adding appropriate content of Co and B [8][9][10][11].…”

“…In order to improve the performance of the alloy, some elements such as Cu, Co, B and Dy were added [5][6][7][8][9][10][11]. The coercive field, saturation magnetization, remanence and Curie temperature of the alloy could be simultaneously enhanced considerably by adding appropriate content of Co and B [8][9][10][11]. A quite high coercive field of about 1.5 T was observed on the Nd 35 Fe 30 Al 10 Co 20 B 5 alloy prepared by suction casting method [8].…”