Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals

Takao Watanabe; Takao Ishii; Kyoichi Kinoshita; Azusa Matsuda

doi:10.1016/0921-4534(91)91841-Q

Growth and anisotropic properties of superconducting La_2-xCa_1+xCu₂O_6-x/2+δ single crystals

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

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Single crystals of La_2-xCa_1+xCu₂O_6-x/2+δ have been grown by the CuO flux method. After annealing under a high partial pressure of O₂, these crystals showed zero resistance at 41 K and a perfect shielding effect (3% Meissner signal). These crystals also showed metallic behaviour parallel (a,b) and perpendicular (c) to the basal plane, with an anisotropy of about 30 at room temperature. The Ginzburg-Landau coherence lengths were estimated from Hc2 measurements: ξ_ab=33 A ̊ and ξ_c=12 A ̊. The anisotropy factor of 3 is fairly small for a high-Tc superconductor.

Original language	English
Pages (from-to)	1235-1236
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(91)91841-Q
Publication status	Published - 1991 Dec 1
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(91)91841-Q

Cite this

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title = "Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals",

abstract = "Single crystals of La2-xCa1+xCu2O6-x/2+δ have been grown by the CuO flux method. After annealing under a high partial pressure of O2, these crystals showed zero resistance at 41 K and a perfect shielding effect (3% Meissner signal). These crystals also showed metallic behaviour parallel (a,b) and perpendicular (c) to the basal plane, with an anisotropy of about 30 at room temperature. The Ginzburg-Landau coherence lengths were estimated from Hc2 measurements: ξab=33 A ̊ and ξc=12 A ̊. The anisotropy factor of 3 is fairly small for a high-Tc superconductor.",

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T1 - Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals

AU - Watanabe, Takao

AU - Ishii, Takao

AU - Kinoshita, Kyoichi

AU - Matsuda, Azusa

PY - 1991/12/1

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N2 - Single crystals of La2-xCa1+xCu2O6-x/2+δ have been grown by the CuO flux method. After annealing under a high partial pressure of O2, these crystals showed zero resistance at 41 K and a perfect shielding effect (3% Meissner signal). These crystals also showed metallic behaviour parallel (a,b) and perpendicular (c) to the basal plane, with an anisotropy of about 30 at room temperature. The Ginzburg-Landau coherence lengths were estimated from Hc2 measurements: ξab=33 A ̊ and ξc=12 A ̊. The anisotropy factor of 3 is fairly small for a high-Tc superconductor.

AB - Single crystals of La2-xCa1+xCu2O6-x/2+δ have been grown by the CuO flux method. After annealing under a high partial pressure of O2, these crystals showed zero resistance at 41 K and a perfect shielding effect (3% Meissner signal). These crystals also showed metallic behaviour parallel (a,b) and perpendicular (c) to the basal plane, with an anisotropy of about 30 at room temperature. The Ginzburg-Landau coherence lengths were estimated from Hc2 measurements: ξab=33 A ̊ and ξc=12 A ̊. The anisotropy factor of 3 is fairly small for a high-Tc superconductor.

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Growth and anisotropic properties of superconducting La_2-xCa_1+xCu₂O_6-x/2+δ single crystals

Abstract

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