Synthesis of Melted Yttrium Barium Copper Oxide-0.325Ag Superconductors Contained in a Solid Silver Cladding at Reduced Oxygen Partial Pressures

Haigun Lee, Haiwoong Park

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents a study on the feasibility of concurrent synthesis and melt-processing of Yttrium Barium Copper Oxide-0.325 Ag (Y123-Ag) superconductor by thermo-mechanical processing of the silver-clad precursor containing BaCuO2.5 at reduced oxygen partial pressures. At 950-955°C the melted Y123-Ag superconductor was contained in a solid silver cladding which melted at 960-965°C. After 15 min at 950-965°C and oxygen partial pressures of 0.28 and 0.55 kPa, melted orthorhombic Y123-Ag formed. On extending the heat-treatment from 15 to 30 min, the orthorhombic Y123-Ag changed to tetragonal Y123-Ag which was supported directly by a series of rapid-heat, soak, and rapid-cool experiments at 950°C (PO2 = 0.28 kPa), and thus direct formation of orthorhombic Y123-Ag from BaCuO 2.5. The highest critical current densities, Jc (transport) at 77 K and Jc (magnetization) estimated from the magnetization hysteresis loop were 4.0 × 103 and 1.2 × 105 A/cm2, respectively.

Original languageEnglish
Pages (from-to)6841-6847
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number11
Publication statusPublished - 2003 Nov 1
Externally publishedYes

Keywords

  • BaCuO
  • Orthorhombic phase
  • Oxygen partial pressure
  • Tetragonal phase
  • Yttrium Barium Copper Oxide-0.325Ag (Y123-Ag) superconductor

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Synthesis of Melted Yttrium Barium Copper Oxide-0.325Ag Superconductors Contained in a Solid Silver Cladding at Reduced Oxygen Partial Pressures'. Together they form a unique fingerprint.

  • Cite this