Abstract
The magnetic susceptibility has been measured for liquid transition metal–Si alloys (TM1−cSic, TM=Ni, Co, Fe, Mn) as a function of temperature. The magnetic susceptibilities of liquid Ni1−cSic with c⩾0.3, liquid Co1−cSic with c⩾0.4 and liquid Fe1−cSic with c⩾0.6 were found to be almost independent of temperature, which suggests that the Ni, Co and Fe ions on the Si side are in the non-magnetic state. Liquid Ni1−cSic with c⩽0.2, liquid Co1−cSic with c⩽0.3 and liquid Fe1−cSic with c⩽0.5 show the Curie–Weiss behavior with a reasonable value of effective Bohr magnetic number. Liquid Mn1−cSic with c⩽0.2 and c⩾0.6 were found to be in their non-magnetic state. However, the Curie–Weiss behavior was observed for liquid Mn1−cSic with c=0.3, 0.4 and 0.5. The magnetic susceptibility of their liquid alloys in the non-magnetic state has been studied by using Anderson model. The density of 3d states at the Fermi level can be estimated from the data of magnetic susceptibility.
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