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

7 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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title = "A new approach to a two-dimensional artificial pinning center",

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.",

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

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T1 - A new approach to a two-dimensional artificial pinning center

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.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - 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.

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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