A new approach to a two-dimensional artificial pinning center

M. Takamura, Masashi Mukaida, Y. Shingai, Ryo Teranishi, K. Yamada, N. Mori, S. Horii, A. Ichinose, R. Kita, S. Kato, K. Matsumoto, Y. Yoshida

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A multilayer alternately stacked a-axis oriented YBa 2 Cu 3 O 7-δ and PrBa 2 Cu 3 O 7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO 4 substrate with a Gd 2 CuO 4 buffer layer by pulsed laser deposition. We used an Y123 target that contains a Pr123 sector for obtaining the Y123/Pr123 multilayer. The multilayer structure of the obtained film was confirmed by a transmission electron microscope. In magnetic field (B) angular dependences of critical current density (J C ) (J C -B-θ curves), J C peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in J C -B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in J C -B-θ curves of the Y123/Pr123 multilayer are attributed to Pr123 layers. This result indicates that the Y123/Pr123 multilayer has c-axis-correlated pinning centers. Consequently, it is concluded that Pr123 layers work as two-dimensional artificial pinning centers with the current direction along the b-axis.

Original languageEnglish
Pages (from-to)904-908
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007

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Multilayers
curves
Buffer layers
Pulsed laser deposition
laminates
Electron microscopes
pulsed laser deposition
critical current
sectors
Magnetic fields
buffers
electron microscopes
current density
Substrates
magnetic fields

All Science Journal Classification (ASJC) codes

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

Cite this

A new approach to a two-dimensional artificial pinning center. / Takamura, M.; Mukaida, Masashi; Shingai, Y.; Teranishi, Ryo; Yamada, K.; Mori, N.; Horii, S.; Ichinose, A.; Kita, R.; Kato, S.; Matsumoto, K.; Yoshida, Y.

In: Physica C: Superconductivity and its applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 904-908.

Research output: Contribution to journalArticle

Takamura, M, Mukaida, M, Shingai, Y, Teranishi, R, Yamada, K, Mori, N, Horii, S, Ichinose, A, Kita, R, Kato, S, Matsumoto, K & Yoshida, Y 2007, 'A new approach to a two-dimensional artificial pinning center', Physica C: Superconductivity and its applications, vol. 463-465, no. SUPPL., pp. 904-908. https://doi.org/10.1016/j.physc.2007.04.274
Takamura, M. ; Mukaida, Masashi ; Shingai, Y. ; Teranishi, Ryo ; Yamada, K. ; Mori, N. ; Horii, S. ; Ichinose, A. ; Kita, R. ; Kato, S. ; Matsumoto, K. ; Yoshida, Y. / A new approach to a two-dimensional artificial pinning center. In: Physica C: Superconductivity and its applications. 2007 ; Vol. 463-465, No. SUPPL. pp. 904-908.
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