Composition-induced superconductivity (up to 55 K) in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ

R. S. Liu; S. F. Hu; I. Gameson; P. P. Edwards; A. Maignan; T. Rouillon; D. Groult; B. Raveau

doi:10.1016/0022-4596(91)90301-W

Composition-induced superconductivity (up to 55 K) in the system (Pb_0.75Cu_0.25)Sr₂(Ca_1-xY_x)Cu₂O_7-δ

R. S. Liu^*, S. F. Hu, I. Gameson, P. P. Edwards, A. Maignan, T. Rouillon, D. Groult, B. Raveau

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb_0.75Cu_0.25)Sr₂(Ca_1-xY_x)Cu₂O_7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7.

Original language	English
Pages (from-to)	276-282
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	93
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(91)90301-W
Publication status	Published - 1991 Jul
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/0022-4596(91)90301-W

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title = "Composition-induced superconductivity (up to 55 K) in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ",

abstract = "We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7.",

author = "Liu, {R. S.} and Hu, {S. F.} and I. Gameson and Edwards, {P. P.} and A. Maignan and T. Rouillon and D. Groult and B. Raveau",

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doi = "10.1016/0022-4596(91)90301-W",

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AU - Liu, R. S.

AU - Hu, S. F.

AU - Gameson, I.

AU - Edwards, P. P.

AU - Maignan, A.

AU - Rouillon, T.

AU - Groult, D.

AU - Raveau, B.

PY - 1991/7

Y1 - 1991/7

N2 - We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7.

AB - We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7.

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Composition-induced superconductivity (up to 55 K) in the system (Pb_0.75Cu_0.25)Sr₂(Ca_1-xY_x)Cu₂O_7-δ

Abstract

ASJC Scopus subject areas

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