Magnetic properties of Nd60-xYxFe30Al10 (x=0,10,30) melt-spun ribbons containing two amorphous magnetic phases

作者：Sun ZG^*; Loser W; Eckert J; Muller KH; Schultz L

来源：Journal of Applied Physics, 2002, 91(11): 9267-9271.

DOI：10.1063/1.1475356

The magnetic properties of Nd60-xYxFe30Al10 (x=0, 10, 30) melt-spun ribbons were studied. The ribbons contain two amorphous magnetic phases characterized by their Curie temperature T-C1 and T-C2. The Y atoms may be unevenly distributed in the two magnetic phases. The Y atoms prefer to substitute Nd in the low T-C1 phase. Thermo-history effects are found in the thermomagnetic curves for field-cooled and zero-field-cooled samples. The bifurcation temperature T-b decreases with Y addition, suggesting a decrease of the anisotropy energy and the coercivity. The room-temperature coercivity and remanence ratio also strongly decrease with Y addition. The apparent coercivity mu(0)H(C) for x=0 first increases with decreasing temperature, reaching a maximum at about 60 K, near the Curie temperature of the T-C1 phase, then strongly decreases in the two-magnetic phase region. The coercivity mechanism is assumed as domain-wall pinning effect.

• 出版日期2002-6-1