Single crystal growth and superconductivity in La1.87Ca1.13Cu2O6

Takao Ishii; Takao Watanabe; Kyoichi Kinoshita; Azusa Matsuda

doi:10.1016/0921-4534(91)90008-M

Single crystal growth and superconductivity in La_1.87Ca_1.13Cu₂O₆

Takao Ishii^*, Takao Watanabe, Kyoichi Kinoshita, Azusa Matsuda

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

Single crystals of La_1.87Ca_1.13Cu₂O₆ have been successfully grown using CuO flux. Although the electrical resistivity of the as-grown crystals is semiconducting, superconductivity appears by high oxygen pressure (∼ 300 atm) annealing. The transition temperature is between 50 K (onset) and 40 K (end point). The full magnetic shielding effect is observed under zero field cooling and the Meissner volume fraction is about 3% of that expected for an ideal diamagnet. Electrical and magnetic measurements confirm that the crystals have bulk nature of superconductivity. The anisotropies of the electrical resistivity and the coherence length are small in comparison with other copper oxide superconductors.

Original language	English
Pages (from-to)	39-42
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	179
Issue number	1-3
DOIs	https://doi.org/10.1016/0921-4534(91)90008-M
Publication status	Published - 1991 Aug 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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abstract = "Single crystals of La1.87Ca1.13Cu2O6 have been successfully grown using CuO flux. Although the electrical resistivity of the as-grown crystals is semiconducting, superconductivity appears by high oxygen pressure (∼ 300 atm) annealing. The transition temperature is between 50 K (onset) and 40 K (end point). The full magnetic shielding effect is observed under zero field cooling and the Meissner volume fraction is about 3% of that expected for an ideal diamagnet. Electrical and magnetic measurements confirm that the crystals have bulk nature of superconductivity. The anisotropies of the electrical resistivity and the coherence length are small in comparison with other copper oxide superconductors.",

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AU - Ishii, Takao

AU - Watanabe, Takao

AU - Kinoshita, Kyoichi

AU - Matsuda, Azusa

PY - 1991/8/15

Y1 - 1991/8/15

N2 - Single crystals of La1.87Ca1.13Cu2O6 have been successfully grown using CuO flux. Although the electrical resistivity of the as-grown crystals is semiconducting, superconductivity appears by high oxygen pressure (∼ 300 atm) annealing. The transition temperature is between 50 K (onset) and 40 K (end point). The full magnetic shielding effect is observed under zero field cooling and the Meissner volume fraction is about 3% of that expected for an ideal diamagnet. Electrical and magnetic measurements confirm that the crystals have bulk nature of superconductivity. The anisotropies of the electrical resistivity and the coherence length are small in comparison with other copper oxide superconductors.

AB - Single crystals of La1.87Ca1.13Cu2O6 have been successfully grown using CuO flux. Although the electrical resistivity of the as-grown crystals is semiconducting, superconductivity appears by high oxygen pressure (∼ 300 atm) annealing. The transition temperature is between 50 K (onset) and 40 K (end point). The full magnetic shielding effect is observed under zero field cooling and the Meissner volume fraction is about 3% of that expected for an ideal diamagnet. Electrical and magnetic measurements confirm that the crystals have bulk nature of superconductivity. The anisotropies of the electrical resistivity and the coherence length are small in comparison with other copper oxide superconductors.

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Single crystal growth and superconductivity in La_1.87Ca_1.13Cu₂O₆

Abstract

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