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

Takao Watanabe, Takao Ishii, Kyoichi Kinoshita, Azusa Matsuda

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1235-1236
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume185-189
Issue numberPART 2
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

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Anisotropy
Single crystals
Crystals
anisotropy
single crystals
Partial pressure
Shielding
Superconducting materials
crystals
partial pressure
shielding
Annealing
Fluxes
annealing
room temperature
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals. / Watanabe, Takao; Ishii, Takao; Kinoshita, Kyoichi; Matsuda, Azusa.

In: Physica C: Superconductivity and its Applications, Vol. 185-189, No. PART 2, 01.12.1991, p. 1235-1236.

Research output: Contribution to journalArticle

Watanabe, Takao ; Ishii, Takao ; Kinoshita, Kyoichi ; Matsuda, Azusa. / Growth and anisotropic properties of superconducting La2-xCa1+xCu2O6-x/2+δ single crystals. In: Physica C: Superconductivity and its Applications. 1991 ; Vol. 185-189, No. PART 2. pp. 1235-1236.
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