Thermal conductivity of partially substituted YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.59.13639· OSTI ID:341398

Williams, R K; Martin, P M; Scarbrough, J O ^[1]

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1. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6116 (United States)

Partially substituted YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (Y123) samples are produced by replacing part of the Y with appropriate rare-earth elements and/or part of the Ba with Sr. Partial substitution has little effect on the normal-state resistivity or superconducting transition temperature, but should reduce the phonon part of the thermal conductivity, {lambda}{sub p}. Ambient temperature measurements on several polycrystalline samples show a thermal conductivity, {lambda}, reduction relative to Y123. The effect persists to lower temperatures and data for Y123 and Y{sub 0.5}Yb{sub 0.5}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} show that the {lambda} peak at T{sub c}/2 is also affected. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 341398
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 59; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BARIUM OXIDES
COPPER OXIDES
CRITICAL TEMPERATURE
HIGH-TC SUPERCONDUCTORS
PEROVSKITES
PHONONS
SUPERCONDUCTIVITY
TEMPERATURE MEASUREMENT
THERMAL CONDUCTIVITY
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES