Oxygen stoichiometry and superconductivity in (YLa)(Ba3.4La 0.6)Cu6O14+or-y

J. R. Grasmeder; M. T. Weller; D. H. Gregory; P. C. Lanchester; B. Jayaram

doi:10.1088/0953-2048/2/2/008

Oxygen stoichiometry and superconductivity in (YLa)(Ba_3.4La _0.6)Cu₆O_14+or-y

J. R. Grasmeder, M. T. Weller, D. H. Gregory, P. C. Lanchester, B. Jayaram

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Abstract

The results of a study into the annealing behaviour of an oxygen-rich superconductor, YLa_1.6Ba_3.4Cu₆O _14+or-y(-0.12<y<0.47), are reported. As with YBa ₂Cu₃O_7-d, the oxygen level increases with decreasing quench temperature (T_q), and materials are superconducting only for anneals below 500 degrees C. However, an unusual behaviour of the unit cell symmetry has been observed by powder X-ray diffraction: orthorhombicity increases with increasing T_q, and the superconducting materials in this series are tetragonal.

Original language	English
Article number	008
Pages (from-to)	125-128
Number of pages	4
Journal	Superconductor Science and Technology
Volume	2
Issue number	2
DOIs	https://doi.org/10.1088/0953-2048/2/2/008
Publication status	Published - 1989
Externally published	Yes

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/2/2/008

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title = "Oxygen stoichiometry and superconductivity in (YLa)(Ba3.4La 0.6)Cu6O14+or-y",

abstract = "The results of a study into the annealing behaviour of an oxygen-rich superconductor, YLa1.6Ba3.4Cu6O 14+or-y(-0.122Cu3O7-d, the oxygen level increases with decreasing quench temperature (Tq), and materials are superconducting only for anneals below 500 degrees C. However, an unusual behaviour of the unit cell symmetry has been observed by powder X-ray diffraction: orthorhombicity increases with increasing Tq, and the superconducting materials in this series are tetragonal.",

author = "Grasmeder, {J. R.} and Weller, {M. T.} and Gregory, {D. H.} and Lanchester, {P. C.} and B. Jayaram",

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AU - Weller, M. T.

AU - Gregory, D. H.

AU - Lanchester, P. C.

AU - Jayaram, B.

PY - 1989

Y1 - 1989

N2 - The results of a study into the annealing behaviour of an oxygen-rich superconductor, YLa1.6Ba3.4Cu6O 14+or-y(-0.122Cu3O7-d, the oxygen level increases with decreasing quench temperature (Tq), and materials are superconducting only for anneals below 500 degrees C. However, an unusual behaviour of the unit cell symmetry has been observed by powder X-ray diffraction: orthorhombicity increases with increasing Tq, and the superconducting materials in this series are tetragonal.

AB - The results of a study into the annealing behaviour of an oxygen-rich superconductor, YLa1.6Ba3.4Cu6O 14+or-y(-0.122Cu3O7-d, the oxygen level increases with decreasing quench temperature (Tq), and materials are superconducting only for anneals below 500 degrees C. However, an unusual behaviour of the unit cell symmetry has been observed by powder X-ray diffraction: orthorhombicity increases with increasing Tq, and the superconducting materials in this series are tetragonal.

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Oxygen stoichiometry and superconductivity in (YLa)(Ba_3.4La _0.6)Cu₆O_14+or-y

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All Science Journal Classification (ASJC) codes

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