High critical current density in high field in Sm1+xBa 2-xCu3O6+y thin films

Yutaka Yoshida, Yusuke Ichino, Masashi Miura, Yoshiaki Takai, Kaname Matsumoto, Ataru Ichinose, Shigeru Horii, Masashi Mukaida

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Critical current density (Jc), irreversibility field (B irr) and microstructure in epitaxial SmBa2Cu 3O7-x (SmBCO) films are reported. We have developed a novel approach to deposit high performance Sm1+xBa 2-xCu3O6+y (Sm-123) at relatively low substrate temperature on MgO. The use of thin SmBCO seed layer grown at a high substrate temperature enabled us to obtain fully c-axis oriented SmBCO films with high critical current density (Jc) of 2.8 × 105 A/cm 2 under 5 T for B//C at 77 K. This value is as high as in the optimized NbTi superconducting wires achieved for 5 T at 4.2 K. Compared with YBa2Cu3O7-y films, Sm-123 films showed higher Jc in high fields at 77 K. Transmission electron microscopy TEM analyses clarified the Sm/Ba composition ratio fluctuations in the Sm-123 matrix composition in the range of x = 0 - 0.14 with a wavelength of 50-100 nm.

Original languageEnglish
Pages (from-to)2727-2730
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART III
DOIs
Publication statusPublished - Jun 1 2005
Externally publishedYes

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critical current
current density
Thin films
thin films
Transmission electron microscopy
Superconducting wire
transmission electron microscopy
Substrates
Chemical analysis
Seed
seeds
Deposits
deposits
wire
Wavelength
Temperature
microstructure
Microstructure
temperature
matrices

All Science Journal Classification (ASJC) codes

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

Cite this

High critical current density in high field in Sm1+xBa 2-xCu3O6+y thin films. / Yoshida, Yutaka; Ichino, Yusuke; Miura, Masashi; Takai, Yoshiaki; Matsumoto, Kaname; Ichinose, Ataru; Horii, Shigeru; Mukaida, Masashi.

In: IEEE Transactions on Applied Superconductivity, Vol. 15, No. 2 PART III, 01.06.2005, p. 2727-2730.

Research output: Contribution to journalArticle

Yoshida, Y, Ichino, Y, Miura, M, Takai, Y, Matsumoto, K, Ichinose, A, Horii, S & Mukaida, M 2005, 'High critical current density in high field in Sm1+xBa 2-xCu3O6+y thin films', IEEE Transactions on Applied Superconductivity, vol. 15, no. 2 PART III, pp. 2727-2730. https://doi.org/10.1109/TASC.2005.847798
Yoshida Y, Ichino Y, Miura M, Takai Y, Matsumoto K, Ichinose A et al. High critical current density in high field in Sm1+xBa 2-xCu3O6+y thin films. IEEE Transactions on Applied Superconductivity. 2005 Jun 1;15(2 PART III):2727-2730. https://doi.org/10.1109/TASC.2005.847798
Yoshida, Yutaka ; Ichino, Yusuke ; Miura, Masashi ; Takai, Yoshiaki ; Matsumoto, Kaname ; Ichinose, Ataru ; Horii, Shigeru ; Mukaida, Masashi. / High critical current density in high field in Sm1+xBa 2-xCu3O6+y thin films. In: IEEE Transactions on Applied Superconductivity. 2005 ; Vol. 15, No. 2 PART III. pp. 2727-2730.
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