Influence of B content substituting for Al on the magnetic properties of Nd60Fe30Al10−xBx

Coercivity of nanocrystalline Nd–Fe–Co–Al–B alloys with low rare-earth content

“…Nevertheless, their performance is limited in all cases [1,6] from H c = 3-5 kOe. Moreover, a small substitution of B for Al leads to similar hard magnetic properties [5].…”

“…Since the first success of Inoue et al for preparing ferromagnetic bulk amorphous alloys in Nd-Fe-Al system over a wide range of composition [1], extensive works have been devoted to Nd enriched alloys by melt-spinning [2][3][4] or suction casting [5,6]. This new class of bulk amorphous materials has attracted much interest for their physical properties.…”

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

“…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].…”

Thermal Stability and Magnetic Properties of Fe–Nd–Al Amorphous Alloys

“…The Nd-Fe-Al bulk amorphous alloys have been widely investigated [16][17][18][19] because of their excellent amorphous-forming ability and unique hard-magnetic properties. For instance, the effects of B on the formation and the hard-magnetic properties were studied by Kong et al, 20) Takeuchi and Inoue 21) and Chau et al 22) The thermal stability and magnetic properties of Nd-Fe-Co-Al amorphous alloys were studied by Fan et al 23) Kumar et al 24) and Wei et al 25) In addition, the effect of Y was studied by Qiu et al 26) and Sun et al,27) and that of Si by Chiriac and Lupu,28) and those of Ti and V by Chau et al 29) In spite of great endeavors for improving the properties of the Nd-Fe-Al alloys, the magnetization of these Nd-rich amorphous alloys is as small as 0.1-0.3 T because of the low Fe content ranging 60-70 at%. Accordingly, it is of great importance to develop bulk amorphous Nd-Fe-Al alloys with higher Fe contents for respect to improving the magnetization of the alloys with keeping the high amorphous-forming ability.…”