Unstable valence rare earths ion implanted into transition metals: valence variation studies

The technique of ion implantation is applied to study the problem of valence instabilities of Ce and Eu in transition-metal hosts. L3 x-ray absorption spectroscopy measurements are used to probe the rare-earth valence state in these materials. Typical extreme valence variations are illustrated with...

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Published in:Journal of applied physics 1988-04, Vol.63 (8), p.3692-3694
Main Authors: LU, F, GUNAPALA, S, CROFT, M, STOFFEL, N. G, DEN BOER, M. L
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Specific materials
Valence fluctuation, kondo lattice, and heavy-fermion phenomena
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description The technique of ion implantation is applied to study the problem of valence instabilities of Ce and Eu in transition-metal hosts. L3 x-ray absorption spectroscopy measurements are used to probe the rare-earth valence state in these materials. Typical extreme valence variations are illustrated with Y, Ti, and Pd hosts. The important question of identifying extrinsic oxidation of the rare-earth implant is addressed in detail. The signatures of rare earth oxidation in the x-ray spectra of both bulk compound and implanted materials are discussed using specific examples.
doi_str_mv 10.1063/1.340688
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Specific materials
Valence fluctuation, kondo lattice, and heavy-fermion phenomena
title Unstable valence rare earths ion implanted into transition metals: valence variation studies
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