Influence of Processing Conditions on the Microstructure and Physical Properties in Infiltration Growth Processed Mixed REBCO Bulk Superconductors

S. Pavan Kumar Naik, Muralidhar Miryala, Masato Murakami

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1 Citation (Scopus)

Abstract

In this present work, we investigated the effect of liquid phase (LP) source mass on crystal growth, structure, microstructure and magnetic properties of infiltration growth processed (Gd, Dy)Ba2Cu3O7-x ((Gd, Dy)BCO) bulk superconductors. The mixture of Er-123 + Ba3Cu5O8 (035) was chosen as the LP source and the ratio of 211: LP mass (wt.%) was varied between 1:1 to 1:1.5. All samples were crystallized in (00l) direction; however, the supply of excess liquids for (Gd, Dy)BCO sample exhibited non-superconducting phases. As LP mass increased, the non-superconducting inclusions had refined largely due to the availability of sufficient amount of liquids for peritectic reaction. The 211 secondary phase: LP mass ratio of 1:1.4 was found to be the best relation. The onset of superconducting critical temperature was not influenced by the LP mass. However, the critical current density was gradually improved with the increase in LP mass. The possibilities for further enhancement of physical properties are discussed.

Original languageEnglish
JournalIEEE Transactions on Applied Superconductivity
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

infiltration
Infiltration
Superconducting materials
liquid phases
Physical properties
physical properties
microstructure
Microstructure
Liquids
Processing
liquids
mass ratios
availability
crystal growth
critical current
critical temperature
Crystallization
Crystal growth
inclusions
current density

Keywords

  • Cooling
  • Critical current density
  • High-temperature superconductors
  • Liquids
  • Magnetic liquids
  • Microstructure
  • Microstructure
  • Preforms
  • Superconducting materials
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this present work, we investigated the effect of liquid phase (LP) source mass on crystal growth, structure, microstructure and magnetic properties of infiltration growth processed (Gd, Dy)Ba2Cu3O7-x ((Gd, Dy)BCO) bulk superconductors. The mixture of Er-123 + Ba3Cu5O8 (035) was chosen as the LP source and the ratio of 211: LP mass (wt.{\%}) was varied between 1:1 to 1:1.5. All samples were crystallized in (00l) direction; however, the supply of excess liquids for (Gd, Dy)BCO sample exhibited non-superconducting phases. As LP mass increased, the non-superconducting inclusions had refined largely due to the availability of sufficient amount of liquids for peritectic reaction. The 211 secondary phase: LP mass ratio of 1:1.4 was found to be the best relation. The onset of superconducting critical temperature was not influenced by the LP mass. However, the critical current density was gradually improved with the increase in LP mass. The possibilities for further enhancement of physical properties are discussed.",
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