Synthesis and superconductivity of PbBaSrY1-xCaxCu3O7

A. Tokiwa; M. Nagoshi; T. Oku; N. Kobayashi; M. Kikuchi; K. Hiraga; Y. Syono

doi:10.1016/0921-4534(90)90519-K

Synthesis and superconductivity of PbBaSrY_1-xCa_xCu₃O₇

A. Tokiwa, M. Nagoshi, T. Oku, N. Kobayashi, M. Kikuchi, K. Hiraga, Y. Syono

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

35 Citations (Scopus)

Abstract

Superconducting PbBaSrY_1-xCa_xCu₃O₇ with a maximum T_c onset at 65 K was synthesized. Single-phase materials were obtained for 0 ≤ x ≤ 0.25 by sintering in a 1% O₂-N₂ gas at 750-830°C and quenching from 785°C. Superconductivity appeared for x ≥ 0.15 and T_c increased with increasing Ca content. PbBaSrY_0.7Ca_0.3O₇ was confirmed to achieve zero resistance at 37 K with about 45% bulk superconductivity. Superconductivity was considered to occur by hole introduction in CuO₂ sheets by substituting Y³⁺ with Ca²⁺, the same mechanism as in Pb₂Sr₂Y_1-xCa_xCu₃O₈.

Original language	English
Pages (from-to)	285-290
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	168
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(90)90519-K
Publication status	Published - 1990 Jun 15
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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10.1016/0921-4534(90)90519-K

Cite this

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abstract = "Superconducting PbBaSrY1-xCaxCu3O7 with a maximum Tc onset at 65 K was synthesized. Single-phase materials were obtained for 0 ≤ x ≤ 0.25 by sintering in a 1% O2-N2 gas at 750-830°C and quenching from 785°C. Superconductivity appeared for x ≥ 0.15 and Tc increased with increasing Ca content. PbBaSrY0.7Ca0.3O7 was confirmed to achieve zero resistance at 37 K with about 45% bulk superconductivity. Superconductivity was considered to occur by hole introduction in CuO2 sheets by substituting Y3+ with Ca2+, the same mechanism as in Pb2Sr2Y1-xCaxCu3O8.",

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T1 - Synthesis and superconductivity of PbBaSrY1-xCaxCu3O7

AU - Tokiwa, A.

AU - Nagoshi, M.

AU - Oku, T.

AU - Kobayashi, N.

AU - Kikuchi, M.

AU - Hiraga, K.

AU - Syono, Y.

PY - 1990/6/15

Y1 - 1990/6/15

N2 - Superconducting PbBaSrY1-xCaxCu3O7 with a maximum Tc onset at 65 K was synthesized. Single-phase materials were obtained for 0 ≤ x ≤ 0.25 by sintering in a 1% O2-N2 gas at 750-830°C and quenching from 785°C. Superconductivity appeared for x ≥ 0.15 and Tc increased with increasing Ca content. PbBaSrY0.7Ca0.3O7 was confirmed to achieve zero resistance at 37 K with about 45% bulk superconductivity. Superconductivity was considered to occur by hole introduction in CuO2 sheets by substituting Y3+ with Ca2+, the same mechanism as in Pb2Sr2Y1-xCaxCu3O8.

AB - Superconducting PbBaSrY1-xCaxCu3O7 with a maximum Tc onset at 65 K was synthesized. Single-phase materials were obtained for 0 ≤ x ≤ 0.25 by sintering in a 1% O2-N2 gas at 750-830°C and quenching from 785°C. Superconductivity appeared for x ≥ 0.15 and Tc increased with increasing Ca content. PbBaSrY0.7Ca0.3O7 was confirmed to achieve zero resistance at 37 K with about 45% bulk superconductivity. Superconductivity was considered to occur by hole introduction in CuO2 sheets by substituting Y3+ with Ca2+, the same mechanism as in Pb2Sr2Y1-xCaxCu3O8.

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Synthesis and superconductivity of PbBaSrY_1-xCa_xCu₃O₇

Abstract

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