High-pressure oxygen-induced bulk superconductivity in 1222 structure Tl-Pb-Sr-Eu(Ce)-Cu-O

Z. Iqbal; A. P B Sinha; D. E. Morris; J. C. Barry; G. J. Auchterlonie; B. L. Ramakrishna

doi:10.1063/1.349414

High-pressure oxygen-induced bulk superconductivity in 1222 structure Tl-Pb-Sr-Eu(Ce)-Cu-O

Z. Iqbal, A. P B Sinha, D. E. Morris, J. C. Barry, G. J. Auchterlonie, B. L. Ramakrishna

Engineering of Matter, Transport and Energy, School for (IAFSE-SEMTE)

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Abstract

A primarily single phase compound of composition (Tl_0.5Pb _0.5)Sr₂(Eu_2-xCe_x)Cu ₂O₉ (where x ranges from ≪0.1 to 0.17) has been synthesized in the so-called 1222 structure. Bulk superconductivity near 40 K is induced via oxygen doping in 100 bar of oxygen at 550°C. The material has been structurally characterized by diffraction and high-resolution lattice imaging techniques. The lattice images reveal the presence of some intergrowths of a 1212 structure nonsuperconducting (Tl_0.5Pb_0.5)Sr ₂EuCu₂O₇ phase in the bulk 1222 structure of the parent compound and indications of periodicity that suggest the possible existence of a new, composite structure 2434 phase.

Original language	English (US)
Pages (from-to)	2234-2237
Number of pages	4
Journal	Journal of Applied Physics
Volume	70
Issue number	4
DOIs	https://doi.org/10.1063/1.349414
State	Published - 1991

ASJC Scopus subject areas

General Physics and Astronomy

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title = "High-pressure oxygen-induced bulk superconductivity in 1222 structure Tl-Pb-Sr-Eu(Ce)-Cu-O",

abstract = "A primarily single phase compound of composition (Tl0.5Pb 0.5)Sr2(Eu2-xCex)Cu 2O9 (where x ranges from ≪0.1 to 0.17) has been synthesized in the so-called 1222 structure. Bulk superconductivity near 40 K is induced via oxygen doping in 100 bar of oxygen at 550°C. The material has been structurally characterized by diffraction and high-resolution lattice imaging techniques. The lattice images reveal the presence of some intergrowths of a 1212 structure nonsuperconducting (Tl0.5Pb0.5)Sr 2EuCu2O7 phase in the bulk 1222 structure of the parent compound and indications of periodicity that suggest the possible existence of a new, composite structure 2434 phase.",

author = "Z. Iqbal and Sinha, {A. P B} and Morris, {D. E.} and Barry, {J. C.} and Auchterlonie, {G. J.} and Ramakrishna, {B. L.}",

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doi = "10.1063/1.349414",

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T1 - High-pressure oxygen-induced bulk superconductivity in 1222 structure Tl-Pb-Sr-Eu(Ce)-Cu-O

AU - Iqbal, Z.

AU - Sinha, A. P B

AU - Morris, D. E.

AU - Barry, J. C.

AU - Auchterlonie, G. J.

AU - Ramakrishna, B. L.

PY - 1991

Y1 - 1991

N2 - A primarily single phase compound of composition (Tl0.5Pb 0.5)Sr2(Eu2-xCex)Cu 2O9 (where x ranges from ≪0.1 to 0.17) has been synthesized in the so-called 1222 structure. Bulk superconductivity near 40 K is induced via oxygen doping in 100 bar of oxygen at 550°C. The material has been structurally characterized by diffraction and high-resolution lattice imaging techniques. The lattice images reveal the presence of some intergrowths of a 1212 structure nonsuperconducting (Tl0.5Pb0.5)Sr 2EuCu2O7 phase in the bulk 1222 structure of the parent compound and indications of periodicity that suggest the possible existence of a new, composite structure 2434 phase.

AB - A primarily single phase compound of composition (Tl0.5Pb 0.5)Sr2(Eu2-xCex)Cu 2O9 (where x ranges from ≪0.1 to 0.17) has been synthesized in the so-called 1222 structure. Bulk superconductivity near 40 K is induced via oxygen doping in 100 bar of oxygen at 550°C. The material has been structurally characterized by diffraction and high-resolution lattice imaging techniques. The lattice images reveal the presence of some intergrowths of a 1212 structure nonsuperconducting (Tl0.5Pb0.5)Sr 2EuCu2O7 phase in the bulk 1222 structure of the parent compound and indications of periodicity that suggest the possible existence of a new, composite structure 2434 phase.

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High-pressure oxygen-induced bulk superconductivity in 1222 structure Tl-Pb-Sr-Eu(Ce)-Cu-O

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