Electrical resistivity of liquid nickel-lanthanum and nickel-cerium alloys

Journal Article · Thu Feb 15 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.2776· OSTI ID:7010536

Gasser, J; Kefif, B ^[1]

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1. Laboratoire de Physique des Liquides Metalliques, Universite de Metz Ile du Saulcy, 57045 Metz CEDEX 1, France (FR)

The high-temperature melting points of transition metals and the extreme reactivity of rare-earth metals at high temperature explain why very few results exist on the physical properties of this kind of alloy. Except for some papers of Solodovnikov {ital et} {ital al}., no paper on the electronic properties of transition-metal--rare-earth alloys have been published to our knowledge. The scarce pure-metal results are often contradictory. The electrical resistivity of nine liquid lanthanum-nickel alloys (up to 60 at. % nickel) and of six cerium-nickel alloys (up to 53 at. % nickel) has been measured. The raw experimental results had been presented earlier. The concentration dependence of the resistivity is discussed in the framework of the extended Faber-Ziman theory of Dreirach {ital et} {ital al}. in terms of structure factors and form factors. Following a hard-sphere description, we used the Ashcroft-Langreth formula to compute the partial structure factors. The form factors have been deduced by taking transition-- and rare-earth--metal model potentials of the Heine-Abarenkov-Animalu type which incorporate formally the {ital s}-{ital d} and the {ital s}-{ital f} hybridization in the energy band of the lanthanides. Alternatively, we also compute a {ital t}-matrix form factor expressed in terms of phase shifts. The model-potential and {ital t}-matrix--form-factor calculations are compared to the experimental resistivity.

• OSTI ID: 7010536
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:5; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CERIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FLUIDS
FORM FACTORS
HYBRIDIZATION
LIQUID METALS
LIQUIDS
METALS
NICKEL ALLOYS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUANTITY RATIO
RARE EARTH ALLOYS
STRUCTURE FACTORS