The effect of La substitution in superconducting and related (La, Ln, Ce)2CuO4 (Ln = Nd and Gd) compounds

Y. K. Tao; M. Banvalot; Y. Y. Sun; R. L. Meng; P. H. Hor; C. W. Chu

doi:10.1016/0921-4534(90)90425-E

The effect of La substitution in superconducting and related (La, Ln, Ce)₂CuO₄ (Ln = Nd and Gd) compounds

Y. K. Tao, M. Banvalot, Y. Y. Sun, R. L. Meng, P. H. Hor, C. W. Chu

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Abstract

We have prepared and studied the T′-structured LaLn_1-xCe_xCuO₄ (Ln = Nd and Gd) compounds. For Ln = Nd, superconductivity was observed over dopant concentration from x = 0.1 to x = 0.16, with T_c/max = 22 K at x = 0.1. Incorporation of La into the Ln site of the Nd₂ CuO₄ system enlarges the Ce-dopant concentration range over which superconductivity is achieved and provokes a shift of the highest transition temperature towards lower Ce concentration. For Ln = Gd, it makes the maximum solubility significantly increase from x = 0.15 to x = 0.225. No superconductivity was observed over the entire solubility range in the Gd system.

Original language	English
Pages (from-to)	13-16
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	165
Issue number	1
DOIs	https://doi.org/10.1016/0921-4534(90)90425-E
Publication status	Published - 1990 Jan 1

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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title = "The effect of La substitution in superconducting and related (La, Ln, Ce)2CuO4 (Ln = Nd and Gd) compounds",

abstract = "We have prepared and studied the T′-structured LaLn1-xCexCuO4 (Ln = Nd and Gd) compounds. For Ln = Nd, superconductivity was observed over dopant concentration from x = 0.1 to x = 0.16, with Tc/max = 22 K at x = 0.1. Incorporation of La into the Ln site of the Nd2 CuO4 system enlarges the Ce-dopant concentration range over which superconductivity is achieved and provokes a shift of the highest transition temperature towards lower Ce concentration. For Ln = Gd, it makes the maximum solubility significantly increase from x = 0.15 to x = 0.225. No superconductivity was observed over the entire solubility range in the Gd system.",

author = "Tao, {Y. K.} and M. Banvalot and Sun, {Y. Y.} and Meng, {R. L.} and Hor, {P. H.} and Chu, {C. W.}",

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T1 - The effect of La substitution in superconducting and related (La, Ln, Ce)2CuO4 (Ln = Nd and Gd) compounds

AU - Tao, Y. K.

AU - Banvalot, M.

AU - Sun, Y. Y.

AU - Meng, R. L.

AU - Hor, P. H.

AU - Chu, C. W.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - We have prepared and studied the T′-structured LaLn1-xCexCuO4 (Ln = Nd and Gd) compounds. For Ln = Nd, superconductivity was observed over dopant concentration from x = 0.1 to x = 0.16, with Tc/max = 22 K at x = 0.1. Incorporation of La into the Ln site of the Nd2 CuO4 system enlarges the Ce-dopant concentration range over which superconductivity is achieved and provokes a shift of the highest transition temperature towards lower Ce concentration. For Ln = Gd, it makes the maximum solubility significantly increase from x = 0.15 to x = 0.225. No superconductivity was observed over the entire solubility range in the Gd system.

AB - We have prepared and studied the T′-structured LaLn1-xCexCuO4 (Ln = Nd and Gd) compounds. For Ln = Nd, superconductivity was observed over dopant concentration from x = 0.1 to x = 0.16, with Tc/max = 22 K at x = 0.1. Incorporation of La into the Ln site of the Nd2 CuO4 system enlarges the Ce-dopant concentration range over which superconductivity is achieved and provokes a shift of the highest transition temperature towards lower Ce concentration. For Ln = Gd, it makes the maximum solubility significantly increase from x = 0.15 to x = 0.225. No superconductivity was observed over the entire solubility range in the Gd system.

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The effect of La substitution in superconducting and related (La, Ln, Ce)₂CuO₄ (Ln = Nd and Gd) compounds

Abstract

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