Aluminum substitution in Ba2YCu3O7

T. Siegrist; L. F. Schneemeyer; J. V. Waszczak; N. P. Singh; R. L. Opila; B. Batlogg; L. W. Rupp; D. W. Murphy

doi:10.1103/PhysRevB.36.8365

Aluminum substitution in Ba2YCu3O7

T. Siegrist, L. F. Schneemeyer, J. V. Waszczak, N. P. Singh, R. L. Opila, B. Batlogg, L. W. Rupp, D. W. Murphy

Chemistry and Biochemistry

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Abstract

We have investigated the effect of aluminum incorporation on the structure and superconducting transition temperature of single crystals of high-Tc cuprate perovskite superconductors. The use of alumina crucibles for crystal growth results in incorporation of aluminum to varying extents in crystals of composition Ba2YCu3-xAlxO7, x=0-0.22. We have performed x-ray studies on several crystals to determine structural effects of Al incorporation. We find that aluminum substitutes only for copper atoms in the chains. Superconducting transition temperatures Tc determined by dc diamagnetic susceptibility measurements change only slightly, to 80 K for x=0.1, then drop sharply with higher aluminum concentrations. Results are discussed in relation to the importance of the Cu-O chains and oxygen stoichiometry to superconductivity in Ba2YCu3O7.

Original language	English
Pages (from-to)	8365-8368
Number of pages	4
Journal	Physical Review B
Volume	36
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.36.8365
State	Published - 1 Jan 1987

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title = "Aluminum substitution in Ba2YCu3O7",

abstract = "We have investigated the effect of aluminum incorporation on the structure and superconducting transition temperature of single crystals of high-Tc cuprate perovskite superconductors. The use of alumina crucibles for crystal growth results in incorporation of aluminum to varying extents in crystals of composition Ba2YCu3-xAlxO7, x=0-0.22. We have performed x-ray studies on several crystals to determine structural effects of Al incorporation. We find that aluminum substitutes only for copper atoms in the chains. Superconducting transition temperatures Tc determined by dc diamagnetic susceptibility measurements change only slightly, to 80 K for x=0.1, then drop sharply with higher aluminum concentrations. Results are discussed in relation to the importance of the Cu-O chains and oxygen stoichiometry to superconductivity in Ba2YCu3O7.",

author = "T. Siegrist and Schneemeyer, {L. F.} and Waszczak, {J. V.} and Singh, {N. P.} and Opila, {R. L.} and B. Batlogg and Rupp, {L. W.} and Murphy, {D. W.}",

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T1 - Aluminum substitution in Ba2YCu3O7

AU - Siegrist, T.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

AU - Singh, N. P.

AU - Opila, R. L.

AU - Batlogg, B.

AU - Rupp, L. W.

AU - Murphy, D. W.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - We have investigated the effect of aluminum incorporation on the structure and superconducting transition temperature of single crystals of high-Tc cuprate perovskite superconductors. The use of alumina crucibles for crystal growth results in incorporation of aluminum to varying extents in crystals of composition Ba2YCu3-xAlxO7, x=0-0.22. We have performed x-ray studies on several crystals to determine structural effects of Al incorporation. We find that aluminum substitutes only for copper atoms in the chains. Superconducting transition temperatures Tc determined by dc diamagnetic susceptibility measurements change only slightly, to 80 K for x=0.1, then drop sharply with higher aluminum concentrations. Results are discussed in relation to the importance of the Cu-O chains and oxygen stoichiometry to superconductivity in Ba2YCu3O7.

AB - We have investigated the effect of aluminum incorporation on the structure and superconducting transition temperature of single crystals of high-Tc cuprate perovskite superconductors. The use of alumina crucibles for crystal growth results in incorporation of aluminum to varying extents in crystals of composition Ba2YCu3-xAlxO7, x=0-0.22. We have performed x-ray studies on several crystals to determine structural effects of Al incorporation. We find that aluminum substitutes only for copper atoms in the chains. Superconducting transition temperatures Tc determined by dc diamagnetic susceptibility measurements change only slightly, to 80 K for x=0.1, then drop sharply with higher aluminum concentrations. Results are discussed in relation to the importance of the Cu-O chains and oxygen stoichiometry to superconductivity in Ba2YCu3O7.

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Aluminum substitution in Ba2YCu3O7

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