Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer

R. J. Cava; J. J. Krajewski; H. Takagi; H. W. Zandbergen; R. B. Van Dover; W. F. Peck; B. Hessen

doi:10.1016/0921-4534(92)90653-T

Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer

R. J. Cava, J. J. Krajewski, H. Takagi, H. W. Zandbergen, R. B. Van Dover, W. F. Peck, B. Hessen

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Abstract

A new copper oxide based superconductor is reported based on the ordered interleaving of NbO₆ or TaO₆ octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed for only a narrow range of temperatures, annealing times and cooling rates. The relatively low T_c of the prototype compound Sr₂Nd_1.5Ce_0.5NbCu₂O_10-δ, may be due to the presence of the insulating NbO₆ layers or the wide (Nd, Ce)₂O₂ layers which separate the CuO₂ planes.

Original language	English (US)
Pages (from-to)	237-242
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	191
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(92)90653-T
State	Published - Feb 1 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1016/0921-4534(92)90653-T

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abstract = "A new copper oxide based superconductor is reported based on the ordered interleaving of NbO6 or TaO6 octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed for only a narrow range of temperatures, annealing times and cooling rates. The relatively low Tc of the prototype compound Sr2Nd1.5Ce0.5NbCu2O10-δ, may be due to the presence of the insulating NbO6 layers or the wide (Nd, Ce)2O2 layers which separate the CuO2 planes.",

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T1 - Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer

AU - Cava, R. J.

AU - Krajewski, J. J.

AU - Takagi, H.

AU - Zandbergen, H. W.

AU - Van Dover, R. B.

AU - Peck, W. F.

AU - Hessen, B.

PY - 1992/2/1

Y1 - 1992/2/1

N2 - A new copper oxide based superconductor is reported based on the ordered interleaving of NbO6 or TaO6 octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed for only a narrow range of temperatures, annealing times and cooling rates. The relatively low Tc of the prototype compound Sr2Nd1.5Ce0.5NbCu2O10-δ, may be due to the presence of the insulating NbO6 layers or the wide (Nd, Ce)2O2 layers which separate the CuO2 planes.

AB - A new copper oxide based superconductor is reported based on the ordered interleaving of NbO6 or TaO6 octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed for only a narrow range of temperatures, annealing times and cooling rates. The relatively low Tc of the prototype compound Sr2Nd1.5Ce0.5NbCu2O10-δ, may be due to the presence of the insulating NbO6 layers or the wide (Nd, Ce)2O2 layers which separate the CuO2 planes.

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Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer

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