High critical current density and its magnetic fields dependence in (Sm,Eu,Gd)Ba2Cu3Oy films by using multiple targets

Yuya Takahashi; Akihiro Tsuruta; Yusuke Ichino; Yutaka Yoshida; Satoshi Awaji; Ataru Ichinose; Kaname Matsumoto

doi:10.1016/j.physc.2012.03.019

High critical current density and its magnetic fields dependence in (Sm,Eu,Gd)Ba₂Cu₃O_y films by using multiple targets

Yuya Takahashi, Akihiro Tsuruta, Yusuke Ichino, Yutaka Yoshida, Satoshi Awaji, Ataru Ichinose, Kaname Matsumoto

High Field Laboratory for Superconducting Materials

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

1 Citation (Scopus)

Abstract

Melt textured bulks of (Sm_0.33Eu_0.33Gd _0.33)Ba₂Cu₃O_y (SEG123) show high J_c compared with that of YBa₂Cu₃O_y (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO₃ (LAO) substrates and evaluated the J_c and T_c in magnetic field. J_c of the SEG123 film was typically 1.4 MA/cm² at 77 K in self-field. J_c in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, J_c in magnetic fields showed a notable difference. The J_c of SEG123 film were 62.7 kA/cm² at 5 T. We conclude that the J_c in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio.

Original language	English
Pages (from-to)	130-133
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	484
DOIs	https://doi.org/10.1016/j.physc.2012.03.019
Publication status	Published - 2013 Jan 15

Keywords

Films
Low temperature growth
Pinning
REBaCuO

ASJC Scopus subject areas

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.2012.03.019

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High critical current density and its magnetic fields dependence in (Sm,Eu,Gd)Ba₂Cu₃O_y films by using multiple targets. / Takahashi, Yuya; Tsuruta, Akihiro; Ichino, Yusuke; Yoshida, Yutaka; Awaji, Satoshi; Ichinose, Ataru; Matsumoto, Kaname.

In: Physica C: Superconductivity and its applications, Vol. 484, 15.01.2013, p. 130-133.

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

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abstract = "Melt textured bulks of (Sm0.33Eu0.33Gd 0.33)Ba2Cu3Oy (SEG123) show high Jc compared with that of YBa2Cu3Oy (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO3 (LAO) substrates and evaluated the Jc and Tc in magnetic field. Jc of the SEG123 film was typically 1.4 MA/cm2 at 77 K in self-field. Jc in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, Jc in magnetic fields showed a notable difference. The Jc of SEG123 film were 62.7 kA/cm2 at 5 T. We conclude that the Jc in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio.",

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AU - Takahashi, Yuya

AU - Tsuruta, Akihiro

AU - Ichino, Yusuke

AU - Yoshida, Yutaka

AU - Awaji, Satoshi

AU - Ichinose, Ataru

AU - Matsumoto, Kaname

PY - 2013/1/15

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N2 - Melt textured bulks of (Sm0.33Eu0.33Gd 0.33)Ba2Cu3Oy (SEG123) show high Jc compared with that of YBa2Cu3Oy (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO3 (LAO) substrates and evaluated the Jc and Tc in magnetic field. Jc of the SEG123 film was typically 1.4 MA/cm2 at 77 K in self-field. Jc in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, Jc in magnetic fields showed a notable difference. The Jc of SEG123 film were 62.7 kA/cm2 at 5 T. We conclude that the Jc in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio.

AB - Melt textured bulks of (Sm0.33Eu0.33Gd 0.33)Ba2Cu3Oy (SEG123) show high Jc compared with that of YBa2Cu3Oy (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO3 (LAO) substrates and evaluated the Jc and Tc in magnetic field. Jc of the SEG123 film was typically 1.4 MA/cm2 at 77 K in self-field. Jc in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, Jc in magnetic fields showed a notable difference. The Jc of SEG123 film were 62.7 kA/cm2 at 5 T. We conclude that the Jc in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio.

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