Tl and Cu EXAFS on Tl{sub 1}Ba{sub 2{minus}x}Sr{sub x}CuO{sub 6}

Journal Article · Tue Dec 01 04:00:00 EST 1992 · Bulletin of the American Physical Society

OSTI ID:127801

Conradson, S; Mustre De Leon, J; Bishop, A R ^[1]

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1. Los Alamos National Lab., CA (United States); and others

In Tl{sub 1}Ba{sub 2{minus}x}Sr{sub x}CuO{sub 6}, as the Sr concentration is varied, T{sub c} changes from 0 to 90 K, with only small effects on the local structure of the Cu-O and Tl-O planes. The authors have measured the EXAFS at both the Cu K{sub {minus}} and Tl L{sub III{minus}} edges as a function of temperature for 6 different Sr concentrations. This allows the characterization of both Cu-axial oxygen and Tl-axial oxygen bonds. The correlation between the axial-oxygen lattice instability, previously observed in YBa{sub 2}Cu{sub 3}O{sub 7}{sup 1} and T{sub c} is discussed. The behavior of the planar Tl-O bonds as a function of temperature is also discussed.

• OSTI ID: 127801
• Report Number(s): CONF-920376--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
THALLIUM OXIDES
TRANSITION TEMPERATURE
X-RAY FLUORESCENCE ANALYSIS