Fabrication of bulk Y-Ba-Cu-O superconductors with high critical current densities through the infiltration-growth process

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

With the aim of producing bulk YBa2Cu3Oy (Y123) superconductors with high flux pinning performance, we employed an infiltration growth (IG) process, in which liquid phase Ba-Cu-O is infiltrated into Y2BaCuO5 (Y211) pellets with NdBa2Cu3Oy seed at high temperatures to produce Y123 phase. Single grain Y123 samples 27 mm in diameter and 5 mm in thickness could be produced with the seeded IG method. Trapped field measurements showed that the IG-processed Y123 sample was a single domain with the maximum trapped field of around 0.403 T at 1 mm above the surface at 77 K. Magnetization measurements demonstrated that IG-processed Y123 sample exhibits a sharp superconducting transition with an onset Tc of around 93.2 K. Microstructural observations by means of atomic force microscopy (AFM) clarified that sub-micrometer-sized Y211 particles are finely and uniformly distributed in the Y123 matrix, which is the source of high pinning performances. The critical current density (Jc) values at liquid nitrogen temperature (77 K) and 50 K in 0 T were 1.75 × 105 A/cm2 and 5.28 × 105 A/cm2, respectively. These values are the highest among bulk Y123 samples ever reported in the literature.

Original languageEnglish
Pages (from-to)129-132
Number of pages4
JournalCryogenics
Volume63
DOIs
Publication statusPublished - 2014

Fingerprint

Critical current density (superconductivity)
YBCO superconductors
infiltration
Infiltration
Superconducting materials
critical current
current density
Fabrication
fabrication
Flux pinning
flux pinning
Liquid nitrogen
pellets
liquid nitrogen
Seed
micrometers
seeds
Atomic force microscopy
Magnetization
liquid phases

Keywords

  • High critical current density (J)
  • Infiltration-growth
  • Microstructure analysis
  • Trapped field measurements

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)

Cite this

@article{7a6854e3347648158c97622c091746bb,
title = "Fabrication of bulk Y-Ba-Cu-O superconductors with high critical current densities through the infiltration-growth process",
abstract = "With the aim of producing bulk YBa2Cu3Oy (Y123) superconductors with high flux pinning performance, we employed an infiltration growth (IG) process, in which liquid phase Ba-Cu-O is infiltrated into Y2BaCuO5 (Y211) pellets with NdBa2Cu3Oy seed at high temperatures to produce Y123 phase. Single grain Y123 samples 27 mm in diameter and 5 mm in thickness could be produced with the seeded IG method. Trapped field measurements showed that the IG-processed Y123 sample was a single domain with the maximum trapped field of around 0.403 T at 1 mm above the surface at 77 K. Magnetization measurements demonstrated that IG-processed Y123 sample exhibits a sharp superconducting transition with an onset Tc of around 93.2 K. Microstructural observations by means of atomic force microscopy (AFM) clarified that sub-micrometer-sized Y211 particles are finely and uniformly distributed in the Y123 matrix, which is the source of high pinning performances. The critical current density (Jc) values at liquid nitrogen temperature (77 K) and 50 K in 0 T were 1.75 × 105 A/cm2 and 5.28 × 105 A/cm2, respectively. These values are the highest among bulk Y123 samples ever reported in the literature.",
keywords = "High critical current density (J), Infiltration-growth, Microstructure analysis, Trapped field measurements",
author = "K. Nakazato and Muralidhar Miryala and Koblischka, {Michael Rudolf} and Masato Murakami",
year = "2014",
doi = "10.1016/j.cryogenics.2014.04.003",
language = "English",
volume = "63",
pages = "129--132",
journal = "Cryogenics",
issn = "0011-2275",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Fabrication of bulk Y-Ba-Cu-O superconductors with high critical current densities through the infiltration-growth process

AU - Nakazato, K.

AU - Miryala, Muralidhar

AU - Koblischka, Michael Rudolf

AU - Murakami, Masato

PY - 2014

Y1 - 2014

N2 - With the aim of producing bulk YBa2Cu3Oy (Y123) superconductors with high flux pinning performance, we employed an infiltration growth (IG) process, in which liquid phase Ba-Cu-O is infiltrated into Y2BaCuO5 (Y211) pellets with NdBa2Cu3Oy seed at high temperatures to produce Y123 phase. Single grain Y123 samples 27 mm in diameter and 5 mm in thickness could be produced with the seeded IG method. Trapped field measurements showed that the IG-processed Y123 sample was a single domain with the maximum trapped field of around 0.403 T at 1 mm above the surface at 77 K. Magnetization measurements demonstrated that IG-processed Y123 sample exhibits a sharp superconducting transition with an onset Tc of around 93.2 K. Microstructural observations by means of atomic force microscopy (AFM) clarified that sub-micrometer-sized Y211 particles are finely and uniformly distributed in the Y123 matrix, which is the source of high pinning performances. The critical current density (Jc) values at liquid nitrogen temperature (77 K) and 50 K in 0 T were 1.75 × 105 A/cm2 and 5.28 × 105 A/cm2, respectively. These values are the highest among bulk Y123 samples ever reported in the literature.

AB - With the aim of producing bulk YBa2Cu3Oy (Y123) superconductors with high flux pinning performance, we employed an infiltration growth (IG) process, in which liquid phase Ba-Cu-O is infiltrated into Y2BaCuO5 (Y211) pellets with NdBa2Cu3Oy seed at high temperatures to produce Y123 phase. Single grain Y123 samples 27 mm in diameter and 5 mm in thickness could be produced with the seeded IG method. Trapped field measurements showed that the IG-processed Y123 sample was a single domain with the maximum trapped field of around 0.403 T at 1 mm above the surface at 77 K. Magnetization measurements demonstrated that IG-processed Y123 sample exhibits a sharp superconducting transition with an onset Tc of around 93.2 K. Microstructural observations by means of atomic force microscopy (AFM) clarified that sub-micrometer-sized Y211 particles are finely and uniformly distributed in the Y123 matrix, which is the source of high pinning performances. The critical current density (Jc) values at liquid nitrogen temperature (77 K) and 50 K in 0 T were 1.75 × 105 A/cm2 and 5.28 × 105 A/cm2, respectively. These values are the highest among bulk Y123 samples ever reported in the literature.

KW - High critical current density (J)

KW - Infiltration-growth

KW - Microstructure analysis

KW - Trapped field measurements

UR - http://www.scopus.com/inward/record.url?scp=84908316382&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908316382&partnerID=8YFLogxK

U2 - 10.1016/j.cryogenics.2014.04.003

DO - 10.1016/j.cryogenics.2014.04.003

M3 - Article

AN - SCOPUS:84908316382

VL - 63

SP - 129

EP - 132

JO - Cryogenics

JF - Cryogenics

SN - 0011-2275

ER -