Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems

R. S. Liu, S. F. Hu, I. Gameson, S. D. Obertelli, P. P. Edwards, D. A. Jefferson, T. Rouillon, M. Hervieu, C. Michel, D. Groult, J. Provost, B. Raveau

Research output: Contribution to journalArticle

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Abstract

Bulk superconductivity was observed in the systems (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ and (InyPb0.75-yCu0.25)Sr2(Ca0.5Y0.5)Cu2O. With decreasing x in (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ, Tc increases up to 55 K at x=0.1; however this specimen is multiphasic with superconducting Meissner volume fraction of ca. 1.5%. In contrast, the sample with x=0.5 is nearly single phase and has a lower Tc (45 K) and a high superconducting Meissner volume fraction ca. 20.2%. An increase of the indium doping in (InyPb0.75-yCu0.25Sr2(Ca0.5Y0.5)Cu2O7-δ, 0 ≤y≤0.2, results in an increase in the superconducting transition temperature from 45 K for y=0, to 60 K for y=0.2.

Original languageEnglish
Pages (from-to)99-101
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume190
Issue number1-2
DOIs
Publication statusPublished - 1991 Dec 2

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Superconducting materials
Volume fraction
Indium
Superconductivity
Superconducting transition temperature
indium
superconductivity
transition temperature
Doping (additives)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems. / Liu, R. S.; Hu, S. F.; Gameson, I.; Obertelli, S. D.; Edwards, P. P.; Jefferson, D. A.; Rouillon, T.; Hervieu, M.; Michel, C.; Groult, D.; Provost, J.; Raveau, B.

In: Physica C: Superconductivity and its applications, Vol. 190, No. 1-2, 02.12.1991, p. 99-101.

Research output: Contribution to journalArticle

Liu, RS, Hu, SF, Gameson, I, Obertelli, SD, Edwards, PP, Jefferson, DA, Rouillon, T, Hervieu, M, Michel, C, Groult, D, Provost, J & Raveau, B 1991, 'Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems', Physica C: Superconductivity and its applications, vol. 190, no. 1-2, pp. 99-101. https://doi.org/10.1016/S0921-4534(05)80212-6
Liu, R. S. ; Hu, S. F. ; Gameson, I. ; Obertelli, S. D. ; Edwards, P. P. ; Jefferson, D. A. ; Rouillon, T. ; Hervieu, M. ; Michel, C. ; Groult, D. ; Provost, J. ; Raveau, B. / Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems. In: Physica C: Superconductivity and its applications. 1991 ; Vol. 190, No. 1-2. pp. 99-101.
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abstract = "Bulk superconductivity was observed in the systems (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ and (InyPb0.75-yCu0.25)Sr2(Ca0.5Y0.5)Cu2O-δ. With decreasing x in (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ, Tc increases up to 55 K at x=0.1; however this specimen is multiphasic with superconducting Meissner volume fraction of ca. 1.5{\%}. In contrast, the sample with x=0.5 is nearly single phase and has a lower Tc (45 K) and a high superconducting Meissner volume fraction ca. 20.2{\%}. An increase of the indium doping in (InyPb0.75-yCu0.25Sr2(Ca0.5Y0.5)Cu2O7-δ, 0 ≤y≤0.2, results in an increase in the superconducting transition temperature from 45 K for y=0, to 60 K for y=0.2.",
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T1 - Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems

AU - Liu, R. S.

AU - Hu, S. F.

AU - Gameson, I.

AU - Obertelli, S. D.

AU - Edwards, P. P.

AU - Jefferson, D. A.

AU - Rouillon, T.

AU - Hervieu, M.

AU - Michel, C.

AU - Groult, D.

AU - Provost, J.

AU - Raveau, B.

PY - 1991/12/2

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N2 - Bulk superconductivity was observed in the systems (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ and (InyPb0.75-yCu0.25)Sr2(Ca0.5Y0.5)Cu2O-δ. With decreasing x in (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ, Tc increases up to 55 K at x=0.1; however this specimen is multiphasic with superconducting Meissner volume fraction of ca. 1.5%. In contrast, the sample with x=0.5 is nearly single phase and has a lower Tc (45 K) and a high superconducting Meissner volume fraction ca. 20.2%. An increase of the indium doping in (InyPb0.75-yCu0.25Sr2(Ca0.5Y0.5)Cu2O7-δ, 0 ≤y≤0.2, results in an increase in the superconducting transition temperature from 45 K for y=0, to 60 K for y=0.2.

AB - Bulk superconductivity was observed in the systems (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ and (InyPb0.75-yCu0.25)Sr2(Ca0.5Y0.5)Cu2O-δ. With decreasing x in (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ, Tc increases up to 55 K at x=0.1; however this specimen is multiphasic with superconducting Meissner volume fraction of ca. 1.5%. In contrast, the sample with x=0.5 is nearly single phase and has a lower Tc (45 K) and a high superconducting Meissner volume fraction ca. 20.2%. An increase of the indium doping in (InyPb0.75-yCu0.25Sr2(Ca0.5Y0.5)Cu2O7-δ, 0 ≤y≤0.2, results in an increase in the superconducting transition temperature from 45 K for y=0, to 60 K for y=0.2.

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