Magnetic and Electrical Properties of Amorphous and Annealed Ni₈₄Y₈Kr₈ Alloys

抄録

Magnetic and electrical properties of amorphous and annealed Ni₈₄Y₈Kr₈ samples have been investigated. A transition towards a state of higher magnetization is observed in a high field. This anomaly may be interpreted as a metamagnetic transition. The spontaneous magnetization, M(0, T), and the initial susceptibility, χ(0, T) exhibit maxima below 10 K. The resistivity measurements reveal that the amorphous sample has a resistivity minimum at about 15 K. The resistivity minimum is not observed in the annealed sample. The high magnetic field affects the resistivity at low temperatures.