Magnetic Property of Liquid 3d Transition Metal-Al Alloys

The measurements of the magnetic susceptibility χ of liquid transition metal-Al alloys were carried out during cooling from about 1600 °C to the melting point. The χ's of liquid Ni1-cAlc with c≥0.3, Co1-cAlc with c≥0.6, and Fe1-cAlc with c≥0.8 have positive and weak temperature dependences, whi...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2009-07, Vol.78 (7), p.74702
Main Authors: TAHARA, Shuta, OHNO, Satoru, OKADA, Tatsuya
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic liquids
Magnetic properties and materials
Physics
Studies of specific magnetic materials
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Summary:The measurements of the magnetic susceptibility χ of liquid transition metal-Al alloys were carried out during cooling from about 1600 °C to the melting point. The χ's of liquid Ni1-cAlc with c≥0.3, Co1-cAlc with c≥0.6, and Fe1-cAlc with c≥0.8 have positive and weak temperature dependences, which suggests that the Ni, Co, and Fe ions in their liquid alloys are in the nonmagnetic state. Liquid Mn0.1Al0.9, Cr1-cAlc with c≥0.5, V1-cAlc with c≥0.8, and Ti1-cAlc with c≥0.5 were also found to be in the nonmagnetic state. The magnetic susceptibility of their liquid alloys in the nonmagnetic state has been studied using the Anderson model. On the other hand, liquid Ni1-cAlc with c≤0.2, Co1-cAlc with c≤0.5, Fe1-cAlc with c≤0.7, and Mn1-cAlc with 0.3≤c≤0.7 show the Curie-Weiss behavior. Reasonable parameters of the Curie-Weiss law for their liquid alloys can be obtained by plotting 1/χ vs T and χ vs 1/T.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.78.074702