[ital L][sub III] x-ray absorption in Yb compounds: Temperature dependence of the valence

Journal Article · Sat Jan 15 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.1627· OSTI ID:5305481

Lawrence, J M ^[1]; Kwei, G H; Canfield, P C; DeWitt, J G; Lawson, A C ^[2]

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1. Physics Department, University of California, Irvine, California 92717 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We report x-ray-absorption measurements near the Yb [ital L][sub III] absorption edge of YbAl[sub 3], YbCu[sub 2]Si[sub 2], YbAgCu[sub 4], and related compounds. Our results suggest that the bulk Yb valence changes with temperature in a manner consistent with predictions of the single impurity Anderson model. We discuss the relationship between these results and recent valence-band photoemission results in the same compounds where the existence of temperature dependence has been disputed.

• OSTI ID: 5305481
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:3; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
COPPER ALLOYS
COPPER BASE ALLOYS
COPPER COMPOUNDS
COPPER SILICIDES
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
SILICIDES
SILICON COMPOUNDS
SILVER ALLOYS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRANSITION ELEMENT COMPOUNDS
VALENCE
YTTERBIUM ALLOYS
YTTERBIUM COMPOUNDS
YTTERBIUM SILICIDES