Evolution from first-order valence transition to heavy-fermion behavior in YbIn{sub 1{minus}{ital x}}Ag{sub {ital x}}Cu{sub 4}

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.12207· OSTI ID:388331

Sarrao, J L; Immer, C D; Benton, C L; Fisk, Z ^[1]; Lawrence, J M ^[2]; Mandrus, D; Thompson, J D ^[3]

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1. National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32306 (United States)
2. Department of Physics, University of California, Irvine, Irvine, California 92717 (United States)
3. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

YbInCu{sub 4} undergoes a first-order isostructural valence transition near 40 K, whereas YbAgCu{sub 4} is a moderately heavy ({gamma}=250 mJ/molK{sup 2}) mixed-valence compound. We have succeeded in growing single crystals of these compounds, as well as many intermediate alloys, using flux-growth techniques. The evolution from YbInCu{sub 4} to YbAgCu{sub 4} has been characterized using electrical resistivity, magnetic susceptibility, and x-ray powder diffraction. The data are interpreted in terms of the evolution of the single-impurity Kondo temperature as a function of Ag concentration. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388331
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER COMPOUNDS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
INDIUM COMPOUNDS
INTERMETALLIC COMPOUNDS
KONDO EFFECT
MAGNETIC SUSCEPTIBILITY
PHASE TRANSFORMATIONS
SILVER COMPOUNDS
YTTERBIUM COMPOUNDS