Partial melting of filamentary Ho1Ba2Cu 3Ox superconductors

E. Sato; T. Goto; Kazuo Watanabe

doi:10.1016/j.physc.2004.01.118

Partial melting of filamentary Ho₁Ba₂Cu ₃O_x superconductors

E. Sato, T. Goto, Kazuo Watanabe

High Field Laboratory for Superconducting Materials

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

1 Citation (Scopus)

Abstract

We prepared precursor filamentary Ho₁Ba₂Cu ₃O_x superconductors by a solution spinning. The filamentary precursor was partially melted in flowing O₂ under various heating conditions. The J_c value of the sample was strongly dependent on the flowing O₂ rate. A J_c value of 10 ⁴ A/cm² at 77 K and self-field was attained for the sample melted in flowing O₂ rate of 0.25 l/min. The J_c was measured at 77 K in applied magnetic fields up to 14 T by rotating the sample along the direction perpendicular to the filament length. Anisotropic behavior of the field dependence of J_c was detected. A J_c value of 100 A/cm² at 77 K is maintained by applying the field of 14 T for the sample without rotating. By rotating the angle from the optimized angle to 90°, the J_c value decreased drastically and disappeared by applying the field more than 9 T.

Original language	English
Pages (from-to)	953-957
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.118
Publication status	Published - 2004 Oct 1

Keywords

HoBa CuO
Melt-growth process
Superconducting filament

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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title = "Partial melting of filamentary Ho1Ba2Cu 3Ox superconductors",

abstract = "We prepared precursor filamentary Ho1Ba2Cu 3Ox superconductors by a solution spinning. The filamentary precursor was partially melted in flowing O2 under various heating conditions. The Jc value of the sample was strongly dependent on the flowing O2 rate. A Jc value of 10 4 A/cm2 at 77 K and self-field was attained for the sample melted in flowing O2 rate of 0.25 l/min. The Jc was measured at 77 K in applied magnetic fields up to 14 T by rotating the sample along the direction perpendicular to the filament length. Anisotropic behavior of the field dependence of Jc was detected. A Jc value of 100 A/cm2 at 77 K is maintained by applying the field of 14 T for the sample without rotating. By rotating the angle from the optimized angle to 90°, the Jc value decreased drastically and disappeared by applying the field more than 9 T.",

keywords = "HoBa CuO, Melt-growth process, Superconducting filament",

author = "E. Sato and T. Goto and Kazuo Watanabe",

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AU - Sato, E.

AU - Goto, T.

AU - Watanabe, Kazuo

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N2 - We prepared precursor filamentary Ho1Ba2Cu 3Ox superconductors by a solution spinning. The filamentary precursor was partially melted in flowing O2 under various heating conditions. The Jc value of the sample was strongly dependent on the flowing O2 rate. A Jc value of 10 4 A/cm2 at 77 K and self-field was attained for the sample melted in flowing O2 rate of 0.25 l/min. The Jc was measured at 77 K in applied magnetic fields up to 14 T by rotating the sample along the direction perpendicular to the filament length. Anisotropic behavior of the field dependence of Jc was detected. A Jc value of 100 A/cm2 at 77 K is maintained by applying the field of 14 T for the sample without rotating. By rotating the angle from the optimized angle to 90°, the Jc value decreased drastically and disappeared by applying the field more than 9 T.

AB - We prepared precursor filamentary Ho1Ba2Cu 3Ox superconductors by a solution spinning. The filamentary precursor was partially melted in flowing O2 under various heating conditions. The Jc value of the sample was strongly dependent on the flowing O2 rate. A Jc value of 10 4 A/cm2 at 77 K and self-field was attained for the sample melted in flowing O2 rate of 0.25 l/min. The Jc was measured at 77 K in applied magnetic fields up to 14 T by rotating the sample along the direction perpendicular to the filament length. Anisotropic behavior of the field dependence of Jc was detected. A Jc value of 100 A/cm2 at 77 K is maintained by applying the field of 14 T for the sample without rotating. By rotating the angle from the optimized angle to 90°, the Jc value decreased drastically and disappeared by applying the field more than 9 T.

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