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

doi:10.1016/S0921-4534(05)80212-6

Bulk new high-T_c superconductors in the (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ and (In,Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-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

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Bulk superconductivity was observed in the systems (Pb_0.75Cu_0.25)Sr₂(Ca_1-xY_x)Cu₂O_7-δ and (In_yPb_0.75-yCu_0.25)Sr₂(Ca_0.5Y_0.5)Cu₂O_-δ. With decreasing x in (Pb_0.75Cu_0.25)Sr₂(Ca_1-xY_x)Cu₂O_7-δ, T_c 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 T_c (45 K) and a high superconducting Meissner volume fraction ca. 20.2%. An increase of the indium doping in (In_yPb_0.75-yCu_0.25Sr₂(Ca_0.5Y_0.5)Cu₂O_7-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 language	English
Pages (from-to)	99-101
Number of pages	3
Journal	Physica C: Superconductivity and its Applications
Volume	190
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(05)80212-6
Publication status	Published - 1991 Dec 2
Externally published	Yes

ASJC Scopus subject areas

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

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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. (1991). Bulk new high-T_c superconductors in the (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ and (In,Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ systems. Physica C: Superconductivity and its Applications, 190(1-2), 99-101. https://doi.org/10.1016/S0921-4534(05)80212-6

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-T_c superconductors in the (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ and (In,Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-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

@article{bea3b055390b47aa9620a5934aef6fa6,

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

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.",

author = "Liu, \{R. S.\} and Hu, \{S. F.\} and I. Gameson and Obertelli, \{S. D.\} and Edwards, \{P. P.\} and Jefferson, \{D. A.\} and T. Rouillon and M. Hervieu and C. Michel and D. Groult and J. Provost and B. Raveau",

note = "Funding Information: We would like to thank the Fellowship of Engineering, BICC, SERC and BP for support.",

year = "1991",

month = dec,

day = "2",

doi = "10.1016/S0921-4534(05)80212-6",

language = "English",

volume = "190",

pages = "99--101",

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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.

N1 - Funding Information: We would like to thank the Fellowship of Engineering, BICC, SERC and BP for support.

PY - 1991/12/2

Y1 - 1991/12/2

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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Bulk new high-T_c superconductors in the (Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ and (In,Pb,Cu)Sr₂(Ca,Y)Cu₂O_7-δ systems

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