Magnetic Properties of Nickel Telluride

概要

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Experimental results are reported of the magnetic properties of NiTe_x, where x is the molal content of tellurium. When 0.1≦x≦0.65, this substance is found to be ferromagnetic; the variations with composition of the saturation magnetization and of the Curie temperature show evidences of a transition at x=0.33(27 atomic percent Te)from a heterogeneous phase beginning at pure metallic nickel to a certain ferromagnetic homogeneous phase. A paramagnetic phase appears above x=0.7(41 atomic percent Te), although its paramagnetic behaviour is not truely paramagnetic in the Curie-Weiss sense, especially at high temperatures, namely, a considerable temperature dependence of the susceptibility is observed at low temperatures and a temperature-independent susceptibility of a small value less than 0.5emu/g at high temperatures. These behaviours of the susceptibility are apparently similar to those of Cu-rich Cu-Ni alloys studied by Kaufmann and Starr, though a marked dissimilarity is also found between their characters. Namely, an antiferro-magnetic character is present in NiTe_x at the paramagnetic compositions.
社団法人日本物理学会の論文
1956-01-05