Weak Itinerant Ferromagnetism in Sc(Co1−xAlx)2
1986 年 55 巻 8 号 p. 2535-2538
詳細
1986 年 55 巻 8 号 p. 2535-2538
The occurrence of the weak itinerant ferromagnetism is found in the pseudobinary compound system Sc(Co1−xAlx)2 in the Al concentration range between x=0.15 and 0.30. The values of the moment and the Curie temperature TC are 0.085 μB/Co and 23.7 K respectively and then the Rhodes-Wohlfarth ratio results in 14 at x=0.23. The square of the spontaneous magnetization and the inverse of the magnetic susceptibility are linear functions of T4⁄3, which is consistent with the SCR theory. The magnetic properties are very similar to those of Y(Co1−xAlx)2 as a whole. One of the characteristics in this system is that the values of TC are always larger than those of Weiss temperature θ.
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