A new approach to a two-dimensional artificial pinning center

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

doi:10.1016/j.physc.2007.04.274

A new approach to a two-dimensional artificial pinning center

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

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

A multilayer alternately stacked a-axis oriented YBa₂Cu₃O_7-δ and PrBa₂Cu₃O_7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO₄ substrate with a Gd₂CuO₄ 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 language	English
Pages (from-to)	904-908
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.04.274
Publication status	Published - Oct 1 2007

All Science Journal Classification (ASJC) codes

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

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10.1016/j.physc.2007.04.274

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A new approach to a two-dimensional artificial pinning center. / Takamura, M.; Mukaida, M.; Shingai, Y.; Teranishi, R.; 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 journal › Article › peer-review

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abstract = "A multilayer alternately stacked a-axis oriented YBa2Cu3O7-δ and PrBa2Cu3O7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO4 substrate with a Gd2CuO4 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 (JC) (JC-B-θ curves), JC peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in JC-B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in JC-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.",

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AU - Takamura, M.

AU - Mukaida, M.

AU - Shingai, Y.

AU - Teranishi, R.

AU - Yamada, K.

AU - Mori, N.

AU - Horii, S.

AU - Ichinose, A.

AU - Kita, R.

AU - Kato, S.

AU - Matsumoto, K.

AU - Yoshida, Y.

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AB - A multilayer alternately stacked a-axis oriented YBa2Cu3O7-δ and PrBa2Cu3O7-δ (Y123/Pr123 multilayer) has been grown on a SrLaGaO4 substrate with a Gd2CuO4 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 (JC) (JC-B-θ curves), JC peaks were observed at B∥a-axis and B∥c-axis of the Y123/Pr123 multilayer. Peaks at B∥c-axis are absent in JC-B-θ curves of pure a-axis oriented Y123 films. Therefore, peaks at B∥c-axis in JC-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.

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A new approach to a two-dimensional artificial pinning center

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